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<h1 align="center">The XML C parser and toolkit of Gnome</h1>
<h1>Note: this is the flat content of the <a href="index.html">web
site</a></h1>
<h1 style="text-align: center">libxml, a.k.a. gnome-xml</h1>
<p></p>
<p
style="text-align: right; font-style: italic; font-size: 10pt">"Programming
with libxml2 is like the thrilling embrace of an exotic stranger." <a
href="http://diveintomark.org/archives/2004/02/18/libxml2">Mark
Pilgrim</a></p>
<p>Libxml2 is the XML C parser and toolkit developed for the Gnome project
(but usable outside of the Gnome platform), it is free software available
under the <a href="http://www.opensource.org/licenses/mit-license.html">MIT
License</a>. XML itself is a metalanguage to design markup languages, i.e.
text language where semantic and structure are added to the content using
extra "markup" information enclosed between angle brackets. HTML is the most
well-known markup language. Though the library is written in C <a
href="python.html">a variety of language bindings</a> make it available in
other environments.</p>
<p>Libxml2 is known to be very portable, the library should build and work
without serious troubles on a variety of systems (Linux, Unix, Windows,
CygWin, MacOS, MacOS X, RISC Os, OS/2, VMS, QNX, MVS, VxWorks, ...)</p>
<p>Libxml2 implements a number of existing standards related to markup
languages:</p>
<ul>
<li>the XML standard: <a
href="http://www.w3.org/TR/REC-xml">http://www.w3.org/TR/REC-xml</a></li>
<li>Namespaces in XML: <a
href="http://www.w3.org/TR/REC-xml-names/">http://www.w3.org/TR/REC-xml-names/</a></li>
<li>XML Base: <a
href="http://www.w3.org/TR/xmlbase/">http://www.w3.org/TR/xmlbase/</a></li>
<li><a href="http://www.cis.ohio-state.edu/rfc/rfc2396.txt">RFC 2396</a> :
Uniform Resource Identifiers <a
href="http://www.ietf.org/rfc/rfc2396.txt">http://www.ietf.org/rfc/rfc2396.txt</a></li>
<li>XML Path Language (XPath) 1.0: <a
href="http://www.w3.org/TR/xpath">http://www.w3.org/TR/xpath</a></li>
<li>HTML4 parser: <a
href="http://www.w3.org/TR/html401/">http://www.w3.org/TR/html401/</a></li>
<li>XML Pointer Language (XPointer) Version 1.0: <a
href="http://www.w3.org/TR/xptr">http://www.w3.org/TR/xptr</a></li>
<li>XML Inclusions (XInclude) Version 1.0: <a
href="http://www.w3.org/TR/xinclude/">http://www.w3.org/TR/xinclude/</a></li>
<li>ISO-8859-x encodings, as well as <a
href="http://www.cis.ohio-state.edu/rfc/rfc2044.txt">rfc2044</a> [UTF-8]
and <a href="http://www.cis.ohio-state.edu/rfc/rfc2781.txt">rfc2781</a>
[UTF-16] Unicode encodings, and more if using iconv support</li>
<li>part of SGML Open Technical Resolution TR9401:1997</li>
<li>XML Catalogs Working Draft 06 August 2001: <a
href="http://www.oasis-open.org/committees/entity/spec-2001-08-06.html">http://www.oasis-open.org/committees/entity/spec-2001-08-06.html</a></li>
<li>Canonical XML Version 1.0: <a
href="http://www.w3.org/TR/xml-c14n">http://www.w3.org/TR/xml-c14n</a>
and the Exclusive XML Canonicalization CR draft <a
href="http://www.w3.org/TR/xml-exc-c14n">http://www.w3.org/TR/xml-exc-c14n</a></li>
<li>Relax NG, ISO/IEC 19757-2:2003, <a
href="http://www.oasis-open.org/committees/relax-ng/spec-20011203.html">http://www.oasis-open.org/committees/relax-ng/spec-20011203.html</a></li>
<li>W3C XML Schemas Part 2: Datatypes <a
href="http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/">REC 02 May
2001</a></li>
<li>W3C <a href="http://www.w3.org/TR/xml-id/">xml:id</a> Working Draft 7
April 2004</li>
</ul>
<p>In most cases libxml2 tries to implement the specifications in a
relatively strictly compliant way. As of release 2.4.16, libxml2 passed all
1800+ tests from the <a
href="http://www.oasis-open.org/committees/xml-conformance/">OASIS XML Tests
Suite</a>.</p>
<p>To some extent libxml2 provides support for the following additional
specifications but doesn't claim to implement them completely:</p>
<ul>
<li>Document Object Model (DOM) <a
href="http://www.w3.org/TR/DOM-Level-2-Core/">http://www.w3.org/TR/DOM-Level-2-Core/</a>
the document model, but it doesn't implement the API itself, gdome2 does
this on top of libxml2</li>
<li><a href="http://www.cis.ohio-state.edu/rfc/rfc959.txt">RFC 959</a> :
libxml2 implements a basic FTP client code</li>
<li><a href="http://www.cis.ohio-state.edu/rfc/rfc1945.txt">RFC 1945</a> :
HTTP/1.0, again a basic HTTP client code</li>
<li>SAX: a SAX2 like interface and a minimal SAX1 implementation compatible
with early expat versions</li>
</ul>
<p>A partial implementation of <a
href="http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/">XML Schemas Part
1: Structure</a> is being worked on but it would be far too early to make any
conformance statement about it at the moment.</p>
<p>Separate documents:</p>
<ul>
<li><a href="http://xmlsoft.org/XSLT/">the libxslt page</a> providing an
implementation of XSLT 1.0 and common extensions like EXSLT for
libxml2</li>
<li><a href="http://gdome2.cs.unibo.it/">the gdome2 page</a>
: a standard DOM2 implementation for libxml2</li>
<li><a href="http://www.aleksey.com/xmlsec/">the XMLSec page</a>: an
implementation of <a href="http://www.w3.org/TR/xmldsig-core/">W3C XML
Digital Signature</a> for libxml2</li>
<li>also check the related links section for more related and active
projects.</li>
</ul>
<p> Hosting sponsored by <a href="http://www.aoemedia.de/opensource-cms.html"
>Open Source CMS services</a> from AOE media.</p>
<p>Logo designed by <a href="mailto:liyanage@access.ch">Marc Liyanage</a>.</p>
<h2><a name="Introducti">Introduction</a></h2>
<p>This document describes libxml, the <a
href="http://www.w3.org/XML/">XML</a> C parser and toolkit developed for the
<a href="http://www.gnome.org/">Gnome</a> project. <a
href="http://www.w3.org/XML/">XML is a standard</a> for building tag-based
structured documents/data.</p>
<p>Here are some key points about libxml:</p>
<ul>
<li>Libxml2 exports Push (progressive) and Pull (blocking) type parser
interfaces for both XML and HTML.</li>
<li>Libxml2 can do DTD validation at parse time, using a parsed document
instance, or with an arbitrary DTD.</li>
<li>Libxml2 includes complete <a
href="http://www.w3.org/TR/xpath">XPath</a>, <a
href="http://www.w3.org/TR/xptr">XPointer</a> and <a
href="http://www.w3.org/TR/xinclude">XInclude</a> implementations.</li>
<li>It is written in plain C, making as few assumptions as possible, and
sticking closely to ANSI C/POSIX for easy embedding. Works on
Linux/Unix/Windows, ported to a number of other platforms.</li>
<li>Basic support for HTTP and FTP client allowing applications to fetch
remote resources.</li>
<li>The design is modular, most of the extensions can be compiled out.</li>
<li>The internal document representation is as close as possible to the <a
href="http://www.w3.org/DOM/">DOM</a> interfaces.</li>
<li>Libxml2 also has a <a
href="http://www.megginson.com/SAX/index.html">SAX like interface</a>;
the interface is designed to be compatible with <a
href="http://www.jclark.com/xml/expat.html">Expat</a>.</li>
<li>This library is released under the <a
href="http://www.opensource.org/licenses/mit-license.html">MIT
License</a>. See the Copyright file in the distribution for the precise
wording.</li>
</ul>
<p>Warning: unless you are forced to because your application links with a
Gnome-1.X library requiring it, <strong><span
style="background-color: #FF0000">Do Not Use libxml1</span></strong>, use
libxml2</p>
<h2><a name="FAQ">FAQ</a></h2>
<p>Table of Contents:</p>
<ul>
<li><a href="FAQ.html#License">License(s)</a></li>
<li><a href="FAQ.html#Installati">Installation</a></li>
<li><a href="FAQ.html#Compilatio">Compilation</a></li>
<li><a href="FAQ.html#Developer">Developer corner</a></li>
</ul>
<h3><a name="License">License</a>(s)</h3>
<ol>
<li><em>Licensing Terms for libxml</em>
<p>libxml2 is released under the <a
href="http://www.opensource.org/licenses/mit-license.html">MIT
License</a>; see the file Copyright in the distribution for the precise
wording</p>
</li>
<li><em>Can I embed libxml2 in a proprietary application ?</em>
<p>Yes. The MIT License allows you to keep proprietary the changes you
made to libxml, but it would be graceful to send-back bug fixes and
improvements as patches for possible incorporation in the main
development tree.</p>
</li>
</ol>
<h3><a name="Installati">Installation</a></h3>
<ol>
<li><strong><span style="background-color: #FF0000">Do Not Use
libxml1</span></strong>, use libxml2</li>
<p></p>
<li><em>Where can I get libxml</em> ?
<p>The original distribution comes from <a
href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a> or <a
href="ftp://ftp.gnome.org/pub/GNOME/sources/libxml2/2.6/">gnome.org</a></p>
<p>Most Linux and BSD distributions include libxml, this is probably the
safer way for end-users to use libxml.</p>
<p>David Doolin provides precompiled Windows versions at <a
href="http://www.ce.berkeley.edu/~doolin/code/libxmlwin32/ ">http://www.ce.berkeley.edu/~doolin/code/libxmlwin32/</a></p>
</li>
<p></p>
<li><em>I see libxml and libxml2 releases, which one should I install ?</em>
<ul>
<li>If you are not constrained by backward compatibility issues with
existing applications, install libxml2 only</li>
<li>If you are not doing development, you can safely install both.
Usually the packages <a
href="http://rpmfind.net/linux/RPM/libxml.html">libxml</a> and <a
href="http://rpmfind.net/linux/RPM/libxml2.html">libxml2</a> are
compatible (this is not the case for development packages).</li>
<li>If you are a developer and your system provides separate packaging
for shared libraries and the development components, it is possible
to install libxml and libxml2, and also <a
href="http://rpmfind.net/linux/RPM/libxml-devel.html">libxml-devel</a>
and <a
href="http://rpmfind.net/linux/RPM/libxml2-devel.html">libxml2-devel</a>
too for libxml2 &gt;= 2.3.0</li>
<li>If you are developing a new application, please develop against
libxml2(-devel)</li>
</ul>
</li>
<li><em>I can't install the libxml package, it conflicts with libxml0</em>
<p>You probably have an old libxml0 package used to provide the shared
library for libxml.so.0, you can probably safely remove it. The libxml
packages provided on <a
href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a> provide
libxml.so.0</p>
</li>
<li><em>I can't install the libxml(2) RPM package due to failed
dependencies</em>
<p>The most generic solution is to re-fetch the latest src.rpm , and
rebuild it locally with</p>
<p><code>rpm --rebuild libxml(2)-xxx.src.rpm</code>.</p>
<p>If everything goes well it will generate two binary rpm packages (one
providing the shared libs and xmllint, and the other one, the -devel
package, providing includes, static libraries and scripts needed to build
applications with libxml(2)) that you can install locally.</p>
</li>
</ol>
<h3><a name="Compilatio">Compilation</a></h3>
<ol>
<li><em>What is the process to compile libxml2 ?</em>
<p>As most UNIX libraries libxml2 follows the "standard":</p>
<p><code>gunzip -c xxx.tar.gz | tar xvf -</code></p>
<p><code>cd libxml-xxxx</code></p>
<p><code>./configure --help</code></p>
<p>to see the options, then the compilation/installation proper</p>
<p><code>./configure [possible options]</code></p>
<p><code>make</code></p>
<p><code>make install</code></p>
<p>At that point you may have to rerun ldconfig or a similar utility to
update your list of installed shared libs.</p>
</li>
<li><em>What other libraries are needed to compile/install libxml2 ?</em>
<p>Libxml2 does not require any other library, the normal C ANSI API
should be sufficient (please report any violation to this rule you may
find).</p>
<p>However if found at configuration time libxml2 will detect and use the
following libs:</p>
<ul>
<li><a href="http://www.info-zip.org/pub/infozip/zlib/">libz</a> : a
highly portable and available widely compression library.</li>
<li>iconv: a powerful character encoding conversion library. It is
included by default in recent glibc libraries, so it doesn't need to
be installed specifically on Linux. It now seems a <a
href="http://www.opennc.org/onlinepubs/7908799/xsh/iconv.html">part
of the official UNIX</a> specification. Here is one <a
href="http://www.gnu.org/software/libiconv/">implementation of the
library</a> which source can be found <a
href="ftp://ftp.ilog.fr/pub/Users/haible/gnu/">here</a>.</li>
</ul>
</li>
<p></p>
<li><em>Make check fails on some platforms</em>
<p>Sometimes the regression tests' results don't completely match the
value produced by the parser, and the makefile uses diff to print the
delta. On some platforms the diff return breaks the compilation process;
if the diff is small this is probably not a serious problem.</p>
<p>Sometimes (especially on Solaris) make checks fail due to limitations
in make. Try using GNU-make instead.</p>
</li>
<li><em>I use the SVN version and there is no configure script</em>
<p>The configure script (and other Makefiles) are generated. Use the
autogen.sh script to regenerate the configure script and Makefiles,
like:</p>
<p><code>./autogen.sh --prefix=/usr --disable-shared</code></p>
</li>
<li><em>I have troubles when running make tests with gcc-3.0</em>
<p>It seems the initial release of gcc-3.0 has a problem with the
optimizer which miscompiles the URI module. Please use another
compiler.</p>
</li>
</ol>
<h3><a name="Developer">Developer</a> corner</h3>
<ol>
<li><em>Troubles compiling or linking programs using libxml2</em>
<p>Usually the problem comes from the fact that the compiler doesn't get
the right compilation or linking flags. There is a small shell script
<code>xml2-config</code> which is installed as part of libxml2 usual
install process which provides those flags. Use</p>
<p><code>xml2-config --cflags</code></p>
<p>to get the compilation flags and</p>
<p><code>xml2-config --libs</code></p>
<p>to get the linker flags. Usually this is done directly from the
Makefile as:</p>
<p><code>CFLAGS=`xml2-config --cflags`</code></p>
<p><code>LIBS=`xml2-config --libs`</code></p>
</li>
<li><em>I want to install my own copy of libxml2 in my home directory and
link my programs against it, but it doesn't work</em>
<p>There are many different ways to accomplish this. Here is one way to
do this under Linux. Suppose your home directory is <code>/home/user.
</code>Then:</p>
<ul>
<li>Create a subdirectory, let's call it <code>myxml</code></li>
<li>unpack the libxml2 distribution into that subdirectory</li>
<li>chdir into the unpacked distribution
(<code>/home/user/myxml/libxml2 </code>)</li>
<li>configure the library using the "<code>--prefix</code>" switch,
specifying an installation subdirectory in
<code>/home/user/myxml</code>, e.g.
<p><code>./configure --prefix /home/user/myxml/xmlinst</code> {other
configuration options}</p>
</li>
<li>now run <code>make</code> followed by <code>make install</code></li>
<li>At this point, the installation subdirectory contains the complete
"private" include files, library files and binary program files (e.g.
xmllint), located in
<p><code>/home/user/myxml/xmlinst/lib,
/home/user/myxml/xmlinst/include </code> and <code>
/home/user/myxml/xmlinst/bin</code></p>
respectively.</li>
<li>In order to use this "private" library, you should first add it to
the beginning of your default PATH (so that your own private program
files such as xmllint will be used instead of the normal system
ones). To do this, the Bash command would be
<p><code>export PATH=/home/user/myxml/xmlinst/bin:$PATH</code></p>
</li>
<li>Now suppose you have a program <code>test1.c</code> that you would
like to compile with your "private" library. Simply compile it using
the command
<p><code>gcc `xml2-config --cflags --libs` -o test test.c</code></p>
Note that, because your PATH has been set with <code>
/home/user/myxml/xmlinst/bin</code> at the beginning, the xml2-config
program which you just installed will be used instead of the system
default one, and this will <em>automatically</em> get the correct
libraries linked with your program.</li>
</ul>
</li>
<p></p>
<li><em>xmlDocDump() generates output on one line.</em>
<p>Libxml2 will not <strong>invent</strong> spaces in the content of a
document since <strong>all spaces in the content of a document are
significant</strong>. If you build a tree from the API and want
indentation:</p>
<ol>
<li>the correct way is to generate those yourself too.</li>
<li>the dangerous way is to ask libxml2 to add those blanks to your
content <strong>modifying the content of your document in the
process</strong>. The result may not be what you expect. There is
<strong>NO</strong> way to guarantee that such a modification won't
affect other parts of the content of your document. See <a
href="http://xmlsoft.org/html/libxml-parser.html#xmlKeepBlanksDefault">xmlKeepBlanksDefault
()</a> and <a
href="http://xmlsoft.org/html/libxml-tree.html#xmlSaveFormatFile">xmlSaveFormatFile
()</a></li>
</ol>
</li>
<p></p>
<li><em>Extra nodes in the document:</em>
<p><em>For an XML file as below:</em></p>
<pre>&lt;?xml version="1.0"?&gt;
&lt;PLAN xmlns="http://www.argus.ca/autotest/1.0/"&gt;
&lt;NODE CommFlag="0"/&gt;
&lt;NODE CommFlag="1"/&gt;
&lt;/PLAN&gt;</pre>
<p><em>after parsing it with the function
pxmlDoc=xmlParseFile(...);</em></p>
<p><em>I want to the get the content of the first node (node with the
CommFlag="0")</em></p>
<p><em>so I did it as following;</em></p>
<pre>xmlNodePtr pnode;
pnode=pxmlDoc-&gt;children-&gt;children;</pre>
<p><em>but it does not work. If I change it to</em></p>
<pre>pnode=pxmlDoc-&gt;children-&gt;children-&gt;next;</pre>
<p><em>then it works. Can someone explain it to me.</em></p>
<p></p>
<p>In XML all characters in the content of the document are significant
<strong>including blanks and formatting line breaks</strong>.</p>
<p>The extra nodes you are wondering about are just that, text nodes with
the formatting spaces which are part of the document but that people tend
to forget. There is a function <a
href="http://xmlsoft.org/html/libxml-parser.html">xmlKeepBlanksDefault
()</a> to remove those at parse time, but that's an heuristic, and its
use should be limited to cases where you are certain there is no
mixed-content in the document.</p>
</li>
<li><em>I get compilation errors of existing code like when accessing
<strong>root</strong> or <strong>child fields</strong> of nodes.</em>
<p>You are compiling code developed for libxml version 1 and using a
libxml2 development environment. Either switch back to libxml v1 devel or
even better fix the code to compile with libxml2 (or both) by <a
href="upgrade.html">following the instructions</a>.</p>
</li>
<li><em>I get compilation errors about non existing
<strong>xmlRootNode</strong> or <strong>xmlChildrenNode</strong>
fields.</em>
<p>The source code you are using has been <a
href="upgrade.html">upgraded</a> to be able to compile with both libxml
and libxml2, but you need to install a more recent version:
libxml(-devel) &gt;= 1.8.8 or libxml2(-devel) &gt;= 2.1.0</p>
</li>
<li><em>Random crashes in threaded applications</em>
<p>Read and follow all advices on the <a href="threads.html">thread
safety</a> page, and make 100% sure you never call xmlCleanupParser()
while the library or an XML document might still be in use by another
thread.</p>
</li>
<li><em>The example provided in the web page does not compile.</em>
<p>It's hard to maintain the documentation in sync with the code
&lt;grin/&gt; ...</p>
<p>Check the previous points 1/ and 2/ raised before, and please send
patches.</p>
</li>
<li><em>Where can I get more examples and information than provided on the
web page?</em>
<p>Ideally a libxml2 book would be nice. I have no such plan ... But you
can:</p>
<ul>
<li>check more deeply the <a href="html/libxml-lib.html">existing
generated doc</a></li>
<li>have a look at <a href="examples/index.html">the set of
examples</a>.</li>
<li>look for examples of use for libxml2 function using the Gnome code
or by asking on Google.</li>
<li><a
href="http://svn.gnome.org/viewvc/libxml2/trunk/">Browse
the libxml2 source</a> , I try to write code as clean and documented
as possible, so looking at it may be helpful. In particular the code
of <a href="http://svn.gnome.org/viewvc/libxml2/trunk/xmllint.c?view=markup">xmllint.c</a> and of the various testXXX.c test programs should
provide good examples of how to do things with the library.</li>
</ul>
</li>
<p></p>
<li><em>What about C++ ?</em>
<p>libxml2 is written in pure C in order to allow easy reuse on a number
of platforms, including embedded systems. I don't intend to convert to
C++.</p>
<p>There is however a C++ wrapper which may fulfill your needs:</p>
<ul>
<li>by Ari Johnson &lt;ari@btigate.com&gt;:
<p>Website: <a
href="http://libxmlplusplus.sourceforge.net/">http://libxmlplusplus.sourceforge.net/</a></p>
<p>Download: <a
href="http://sourceforge.net/project/showfiles.php?group_id=12999">http://sourceforge.net/project/showfiles.php?group_id=12999</a></p>
</li>
</ul>
</li>
<li><em>How to validate a document a posteriori ?</em>
<p>It is possible to validate documents which had not been validated at
initial parsing time or documents which have been built from scratch
using the API. Use the <a
href="http://xmlsoft.org/html/libxml-valid.html#xmlValidateDtd">xmlValidateDtd()</a>
function. It is also possible to simply add a DTD to an existing
document:</p>
<pre>xmlDocPtr doc; /* your existing document */
xmlDtdPtr dtd = xmlParseDTD(NULL, filename_of_dtd); /* parse the DTD */
dtd-&gt;name = xmlStrDup((xmlChar*)"root_name"); /* use the given root */
doc-&gt;intSubset = dtd;
if (doc-&gt;children == NULL) xmlAddChild((xmlNodePtr)doc, (xmlNodePtr)dtd);
else xmlAddPrevSibling(doc-&gt;children, (xmlNodePtr)dtd);
</pre>
</li>
<li><em>So what is this funky "xmlChar" used all the time?</em>
<p>It is a null terminated sequence of utf-8 characters. And only utf-8!
You need to convert strings encoded in different ways to utf-8 before
passing them to the API. This can be accomplished with the iconv library
for instance.</p>
</li>
<li>etc ...</li>
</ol>
<p></p>
<h2><a name="Documentat">Developer Menu</a></h2>
<p>There are several on-line resources related to using libxml:</p>
<ol>
<li>Use the <a href="search.php">search engine</a> to look up
information.</li>
<li>Check the <a href="FAQ.html">FAQ.</a></li>
<li>Check the <a href="http://xmlsoft.org/html/libxml-lib.html">extensive
documentation</a> automatically extracted from code comments.</li>
<li>Look at the documentation about <a href="encoding.html">libxml
internationalization support</a>.</li>
<li>This page provides a global overview and <a href="example.html">some
examples</a> on how to use libxml.</li>
<li><a href="examples/index.html">Code examples</a></li>
<li>John Fleck's libxml2 tutorial: <a href="tutorial/index.html">html</a>
or <a href="tutorial/xmltutorial.pdf">pdf</a>.</li>
<li>If you need to parse large files, check the <a
href="xmlreader.html">xmlReader</a> API tutorial</li>
<li><a href="mailto:james@daa.com.au">James Henstridge</a> wrote <a
href="http://www.daa.com.au/~james/gnome/xml-sax/xml-sax.html">some nice
documentation</a> explaining how to use the libxml SAX interface.</li>
<li>George Lebl wrote <a
href="http://www-106.ibm.com/developerworks/library/l-gnome3/">an article
for IBM developerWorks</a> about using libxml.</li>
<li>Check <a href="http://svn.gnome.org/viewvc/libxml2/trunk/TODO?view=markup">the TODO
file</a>.</li>
<li>Read the <a href="upgrade.html">1.x to 2.x upgrade path</a>
description. If you are starting a new project using libxml you should
really use the 2.x version.</li>
<li>And don't forget to look at the <a
href="http://mail.gnome.org/archives/xml/">mailing-list archive</a>.</li>
</ol>
<h2><a name="Reporting">Reporting bugs and getting help</a></h2>
<p>Well, bugs or missing features are always possible, and I will make a
point of fixing them in a timely fashion. The best way to report a bug is to
use the <a href="http://bugzilla.gnome.org/buglist.cgi?product=libxml2">Gnome
bug tracking database</a> (make sure to use the "libxml2" module name). I
look at reports there regularly and it's good to have a reminder when a bug
is still open. Be sure to specify that the bug is for the package libxml2.</p>
<p>For small problems you can try to get help on IRC, the #xml channel on
irc.gnome.org (port 6667) usually have a few person subscribed which may help
(but there is no guarantee and if a real issue is raised it should go on the
mailing-list for archival).</p>
<p>There is also a mailing-list <a
href="mailto:xml@gnome.org">xml@gnome.org</a> for libxml, with an <a
href="http://mail.gnome.org/archives/xml/">on-line archive</a> (<a
href="http://xmlsoft.org/messages">old</a>). To subscribe to this list,
please visit the <a
href="http://mail.gnome.org/mailman/listinfo/xml">associated Web</a> page and
follow the instructions. <strong>Do not send code, I won't debug it</strong>
(but patches are really appreciated!).</p>
<p>Please note that with the current amount of virus and SPAM, sending mail
to the list without being subscribed won't work. There is *far too many
bounces* (in the order of a thousand a day !) I cannot approve them manually
anymore. If your mail to the list bounced waiting for administrator approval,
it is LOST ! Repost it and fix the problem triggering the error. Also please
note that <span style="color: #FF0000; background-color: #FFFFFF">emails with
a legal warning asking to not copy or redistribute freely the information
they contain</span> are <strong>NOT</strong> acceptable for the mailing-list,
such mail will as much as possible be discarded automatically, and are less
likely to be answered if they made it to the list, <strong>DO NOT</strong>
post to the list from an email address where such legal requirements are
automatically added, get private paying support if you can't share
information.</p>
<p>Check the following <strong><span style="color: #FF0000">before
posting</span></strong>:</p>
<ul>
<li>Read the <a href="FAQ.html">FAQ</a> and <a href="search.php">use the
search engine</a> to get information related to your problem.</li>
<li>Make sure you are <a href="ftp://xmlsoft.org/libxml2/">using a recent
version</a>, and that the problem still shows up in a recent version.</li>
<li>Check the <a href="http://mail.gnome.org/archives/xml/">list
archives</a> to see if the problem was reported already. In this case
there is probably a fix available, similarly check the <a
href="http://bugzilla.gnome.org/buglist.cgi?product=libxml2">registered
open bugs</a>.</li>
<li>Make sure you can reproduce the bug with xmllint or one of the test
programs found in source in the distribution.</li>
<li>Please send the command showing the error as well as the input (as an
attachment)</li>
</ul>
<p>Then send the bug with associated information to reproduce it to the <a
href="mailto:xml@gnome.org">xml@gnome.org</a> list; if it's really libxml
related I will approve it. Please do not send mail to me directly, it makes
things really hard to track and in some cases I am not the best person to
answer a given question, ask on the list.</p>
<p>To <span style="color: #E50000">be really clear about support</span>:</p>
<ul>
<li>Support or help <span style="color: #E50000">requests MUST be sent to
the list or on bugzilla</span> in case of problems, so that the Question
and Answers can be shared publicly. Failing to do so carries the implicit
message "I want free support but I don't want to share the benefits with
others" and is not welcome. I will automatically Carbon-Copy the
xml@gnome.org mailing list for any technical reply made about libxml2 or
libxslt.</li>
<li>There is <span style="color: #E50000">no guarantee of support</span>. If
your question remains unanswered after a week, repost it, making sure you
gave all the detail needed and the information requested.</li>
<li>Failing to provide information as requested or double checking first
for prior feedback also carries the implicit message "the time of the
library maintainers is less valuable than my time" and might not be
welcome.</li>
</ul>
<p>Of course, bugs reported with a suggested patch for fixing them will
probably be processed faster than those without.</p>
<p>If you're looking for help, a quick look at <a
href="http://mail.gnome.org/archives/xml/">the list archive</a> may actually
provide the answer. I usually send source samples when answering libxml2
usage questions. The <a
href="http://xmlsoft.org/html/book1.html">auto-generated documentation</a> is
not as polished as I would like (i need to learn more about DocBook), but
it's a good starting point.</p>
<h2><a name="help">How to help</a></h2>
<p>You can help the project in various ways, the best thing to do first is to
subscribe to the mailing-list as explained before, check the <a
href="http://mail.gnome.org/archives/xml/">archives </a>and the <a
href="http://bugzilla.gnome.org/buglist.cgi?product=libxml2">Gnome bug
database</a>:</p>
<ol>
<li>Provide patches when you find problems.</li>
<li>Provide the diffs when you port libxml2 to a new platform. They may not
be integrated in all cases but help pinpointing portability problems
and</li>
<li>Provide documentation fixes (either as patches to the code comments or
as HTML diffs).</li>
<li>Provide new documentations pieces (translations, examples, etc
...).</li>
<li>Check the TODO file and try to close one of the items.</li>
<li>Take one of the points raised in the archive or the bug database and
provide a fix. <a href="mailto:daniel@veillard.com">Get in touch with me
</a>before to avoid synchronization problems and check that the suggested
fix will fit in nicely :-)</li>
</ol>
<h2><a name="Downloads">Downloads</a></h2>
<p>The latest versions of libxml2 can be found on the <a
href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a> server ( <a
href="ftp://xmlsoft.org/libxml2/">FTP</a> and rsync are available), there are also
mirrors (<a href="ftp://fr.rpmfind.net/pub/libxml/">France</a> and
Antonin Sprinzl also provide <a href="ftp://gd.tuwien.ac.at/pub/libxml/">a
mirror in Austria</a>). (NOTE that you need both the <a
href="http://rpmfind.net/linux/RPM/libxml2.html">libxml(2)</a> and <a
href="http://rpmfind.net/linux/RPM/libxml2-devel.html">libxml(2)-devel</a>
packages installed to compile applications using libxml if using RPMs.)</p>
<p>You can find all the history of libxml(2) and libxslt releases in the <a
href="http://xmlsoft.org/sources/old/">old</a> directory. The precompiled
Windows binaries made by Igor Zlatovic are available in the <a
href="http://xmlsoft.org/sources/win32/">win32</a> directory.</p>
<p>Binary ports:</p>
<ul>
<li>RPMs for x86_64 are available directly on <a
href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a>, the source RPM will compile on
any architecture supported.</li>
<li><a href="mailto:igor@zlatkovic.com">Igor Zlatkovic</a> is now the
maintainer of the Windows port, <a
href="http://www.zlatkovic.com/projects/libxml/index.html">he provides
binaries</a>.</li>
<li>OpenCSW provides <a
href="http://opencsw.org/packages/libxml2">Solaris
binaries</a>.</li>
<li><a href="mailto:Steve.Ball@explain.com.au">Steve Ball</a> provides <a
href="http://www.explain.com.au/oss/libxml2xslt.html">Mac Os X
binaries</a>.</li>
<li>The HP-UX porting center provides <a
href="http://hpux.connect.org.uk/hppd/hpux/Gnome/">HP-UX binaries</a></li>
<li>Bull provides precompiled <a
href="http://gnome.bullfreeware.com/new_index.html">RPMs for AIX</a> as
patr of their GNOME packages</li>
</ul>
<p>If you know other supported binary ports, please <a
href="http://veillard.com/">contact me</a>.</p>
<p><a name="Snapshot">Snapshot:</a></p>
<ul>
<li>Code from the GNOME GIT base libxml2 module, updated hourly <a
href="ftp://xmlsoft.org/libxml2/libxml2-git-snapshot.tar.gz">libxml2-git-snapshot.tar.gz</a>.</li>
<li>Docs, content of the web site, the list archive included <a
href="ftp://xmlsoft.org/libxml2/libxml-docs.tar.gz">libxml-docs.tar.gz</a>.</li>
</ul>
<p><a name="Contribs">Contributions:</a></p>
<p>I do accept external contributions, especially if compiling on another
platform, get in touch with the list to upload the package, wrappers for
various languages have been provided, and can be found in the <a
href="python.html">bindings section</a></p>
<p>Libxml2 is also available from GIT:</p>
<ul>
<li><p>See <a href="http://git.gnome.org/cgit/libxml2/">libxml2 Git web</a>.
To checkout a local tree use:</p>
<pre>git clone git://git.gnome.org/libxml2</pre>
</li>
<li>The <strong>libxslt</strong> module is also present there</li>
</ul>
<h2><a name="News">Releases</a></h2>
<p>Items not finished and worked on, get in touch with the list if you want
to help those</p>
<ul>
<li>More testing on RelaxNG</li>
<li>Finishing up <a href="http://www.w3.org/TR/xmlschema-1/">XML
Schemas</a></li>
</ul>
<p>The <a href="ChangeLog.html">change log</a> describes the recents commits
to the <a href="http://svn.gnome.org/viewvc/libxml2/trunk/">SVN</a> code base.</p>
<p>Here is the list of public releases:</p>
<h3>2.7.6: Oct 6 2009</h3>
<ul>
<li> Bug Fixes:
Restore thread support in default configuration (Andrew W. Nosenko),
URI with no path parsing problem (Daniel Veillard),
Minor patch for conditional defines in threads.c (Eric Zurcher)
</li>
</ul>
<h3>2.7.5: Sep 24 2009</h3>
<ul>
<li> Bug Fixes:
Restore behavior of --with-threads without argument (Andrew W. Nosenko),
Fix memory leak when doc is NULL (Rob Richards),
595792 fixing a RelaxNG bug introduced in 2.7.4 (Daniel Veillard),
Fix a Relaxng bug raised by libvirt test suite (Daniel Veillard),
Fix a parsing problem with little data at startup (Daniel Veillard),
link python module with python library (Frederic Crozat),
594874 Forgot an fclose in xmllint (Daniel Veillard)
</li>
<li> Cleanup:
Adding symbols.xml to EXTRA_DIST (Daniel Veillard)
</li>
</ul>
<h3>2.7.4: Sep 10 2009</h3>
<ul>
<li>Improvements:
Switch to GIT (GNOME),
Add symbol versioning to libxml2 shared libs (Daniel Veillard)
</li>
<li>Portability:
593857 try to work around thread pbm MinGW 4.4 (Daniel Veillard),
594250 rename ATTRIBUTE_ALLOC_SIZE to avoid clashes (Daniel Veillard),
Fix Windows build * relaxng.c: fix windows build (Rob Richards),
Fix the globals.h to use XMLPUBFUN (Paul Smith),
Problem with extern extern in header (Daniel Veillard),
Add -lnetwork for compiling on Haiku (Scott McCreary),
Runtest portability patch for Solaris (Tim Rice),
Small patch to accomodate the Haiku OS (Scott McCreary),
584605 package VxWorks folder in the distribution (Daniel Veillard),
574017 Realloc too expensive on most platform (Daniel Veillard),
Fix windows build (Rob Richards),
545579 doesn't compile without schema support (Daniel Veillard),
xmllint use xmlGetNodePath when not compiled in (Daniel Veillard),
Try to avoid __imp__xmlFree link trouble on msys (Daniel Veillard),
Allow to select the threading system on Windows (LRN),
Fix Solaris binary links, cleanups (Daniel Veillard),
Bug 571059 – MSVC doesn't work with the bakefile (Intron),
fix ATTRIBUTE_PRINTF header clash (Belgabor and Mike Hommey),
fixes for Borland/CodeGear/Embarcadero compilers (Eric Zurcher)
</li>
<li>Documentation:
544910 typo: "renciliateNs" (Leonid Evdokimov),
Add VxWorks to list of OSes (Daniel Veillard),
Regenerate the documentation and update for git (Daniel Veillard),
560524 ¿ xmlTextReaderLocalName description (Daniel Veillard),
Added sponsoring by AOE media for the server (Daniel Veillard),
updated URLs for GNOME (Vincent Lefevre),
more warnings about xmlCleanupThreads and xmlCleanupParser (Daniel Veillard)
</li>
<li>Bug fixes:
594514 memory leaks - duplicate initialization (MOD),
Wrong block opening in htmlNodeDumpOutputInternal (Daniel Veillard),
492317 Fix Relax-NG validation problems (Daniel Veillard),
558452 fight with reg test and error report (Daniel Veillard),
558452 RNG compilation of optional multiple child (Daniel Veillard),
579746 XSD validation not correct / nilable groups (Daniel Veillard),
502960 provide namespace stack when parsing entity (Daniel Veillard),
566012 part 2 fix regresion tests and push mode (Daniel Veillard),
566012 autodetected encoding and encoding conflict (Daniel Veillard),
584220 xpointer(/) and xinclude problems (Daniel Veillard),
587663 Incorrect Attribute-Value Normalization (Daniel Veillard),
444994 HTML chunked failure for attribute with &lt;&gt; (Daniel Veillard),
Fix end of buffer char being split in XML parser (Daniel Veillard),
Non ASCII character may be split at buffer end (Adiel Mittmann),
440226 Add xmlXIncludeProcessTreeFlagsData API (Stefan Behnel),
572129 speed up parsing of large HTML text nodes (Markus Kull),
Fix HTML parsing with 0 character in CDATA (Daniel Veillard),
Fix SetGenericErrorFunc and SetStructured clash (Wang Lam),
566012 Incomplete EBCDIC parsing support (Martin Kogler),
541335 HTML avoid creating 2 head or 2 body element (Daniel Veillard),
541237 error correcting missing end tags in HTML (Daniel Veillard),
583439 missing line numbers in push mode (Daniel Veillard),
587867 xmllint --html --xmlout serializing as HTML (Daniel Veillard),
559501 avoid select and use poll for nanohttp (Raphael Prevost),
559410 - Regexp bug on (...)? constructs (Daniel Veillard),
Fix a small problem on previous HTML parser patch (Daniel Veillard),
592430 - HTML parser runs into endless loop (Daniel Veillard),
447899 potential double free in xmlFreeTextReader (Daniel Veillard),
446613 small validation bug mixed content with NS (Daniel Veillard),
Fix the problem of revalidating a doc with RNG (Daniel Veillard),
Fix xmlKeepBlanksDefault to not break indent (Nick Wellnhofer),
512131 refs from externalRef part need to be added (Daniel Veillard),
512131 crash in xmlRelaxNGValidateFullElement (Daniel Veillard),
588441 allow '.' in HTML Names even if invalid (Daniel Veillard),
582913 Fix htmlSetMetaEncoding() to be nicer (Daniel Veillard),
579317 Try to find the HTML encoding information (Daniel Veillard),
575875 don't output charset=html (Daniel Veillard),
571271 fix semantic of xsd:all with minOccurs=0 (Daniel Veillard),
570702 fix a bug in regexp determinism checking (Daniel Veillard),
567619 xmlValidateNotationUse missing param test (Daniel Veillard),
574393 ¿ utf-8 filename magic for compressed files (Hans Breuer),
Fix a couple of problems in the parser (Daniel Veillard),
585505 ¿ Document ids and refs populated by XSD (Wayne Jensen),
582906 XSD validating multiple imports of the same schema (Jason Childs),
Bug 582887 ¿ problems validating complex schemas (Jason Childs),
Bug 579729 ¿ fix XSD schemas parsing crash (Miroslav Bajtos),
576368 ¿ htmlChunkParser with special attributes (Jiri Netolicky),
Bug 565747 ¿ relax anyURI data character checking (Vincent Lefevre),
Preserve attributes of include start on tree copy (Petr Pajas),
Skip silently unrecognized XPointer schemes (Jakub Wilk),
Fix leak on SAX1, xmllint --sax1 option and debug (Daniel Veillard),
potential NULL dereference on non-glibc (Jim Meyering),
Fix an XSD validation crash (Daniel Veillard),
Fix a regression in streaming entities support (Daniel Veillard),
Fix a couple of ABI issues with C14N 1.1 (Aleksey Sanin),
Aleksey Sanin support for c14n 1.1 (Aleksey Sanin),
reader bug fix with entities (Daniel Veillard),
use options from current parser ctxt for external entities (Rob Richards),
581612 use %s to printf strings (Christian Persch),
584605 change the threading initialization sequence (Igor Novoseltsev),
580705 keep line numbers in HTML parser (Aaron Patterson),
581803 broken HTML table attributes init (Roland Steiner),
do not set error code in xmlNsWarn (Rob Richards),
564217 fix structured error handling problems,
reuse options from current parser for entities (Rob Richards),
xmlXPathRegisterNs should not allow enpty prefixes (Daniel Veillard),
add a missing check in xmlAddSibling (Kris Breuker),
avoid leaks on errors (Jinmei Tatuya)
</li>
<li>Cleanup:
Chasing dead assignments reported by clang-scan (Daniel Veillard),
A few more safety cleanup raised by scan (Daniel Veillard),
Fixing assorted potential problems raised by scan (Daniel Veillard),
Potential uninitialized arguments raised by scan (Daniel Veillard),
Fix a bunch of scan 'dead increments' and cleanup (Daniel Veillard),
Remove a pedantic warning (Daniel Veillard),
555833 always use rm -f in uninstall-local (Daniel Veillard),
542394 xmlRegisterOutputCallbacks MAX_INPUT_CALLBACK (Daniel Veillard),
Autoregenerate libxml2.syms automated checkings (Daniel Veillard),
Make xmlRecoverDoc const (Martin Trappel) (Daniel Veillard),
Both args of xmlStrcasestr are const (Daniel Veillard),
hide the nbParse* variables used for debugging (Mike Hommey),
570806 changed include of config.h (William M. Brack),
cleanups and error reports when xmlTextWriterVSprintf fails (Jinmei Tatuya)
</li>
</ul>
<h3>2.7.3: Jan 18 2009</h3>
<ul>
<li>Build fix: fix build when HTML support is not included.</li>
<li>Bug fixes: avoid memory overflow in gigantic text nodes,
indentation problem on the writed (Rob Richards),
xmlAddChildList pointer problem (Rob Richards and Kevin Milburn),
xmlAddChild problem with attribute (Rob Richards and Kris Breuker),
avoid a memory leak in an edge case (Daniel Zimmermann),
deallocate some pthread data (Alex Ott).</li>
<li>Improvements: configure option to avoid rebuilding docs (Adrian Bunk),
limit text nodes to 10MB max by default, add element traversal
APIs, add a parser option to enable pre 2.7 SAX behavior (Rob Richards),
add gcc malloc checking (Marcus Meissner), add gcc printf like functions
parameters checking (Marcus Meissner).</li>
</ul>
<h3>2.7.2: Oct 3 2008</h3>
<ul>
<li>Portability fix: fix solaris compilation problem, fix compilation
if XPath is not configured in</li>
<li>Bug fixes: nasty entity bug introduced in 2.7.0, restore old behaviour
when saving an HTML doc with an xml dump function, HTML UTF-8 parsing
bug, fix reader custom error handlers (Riccardo Scussat)
<li>Improvement: xmlSave options for more flexibility to save as
XML/HTML/XHTML, handle leading BOM in HTML documents</li>
</ul>
<h3>2.7.1: Sep 1 2008</h3>
<ul>
<li>Portability fix: Borland C fix (Moritz Both)</li>
<li>Bug fixes: python serialization wrappers, XPath QName corner
case handking and leaks (Martin)</li>
<li>Improvement: extend the xmlSave to handle HTML documents and trees</li>
<li>Cleanup: python serialization wrappers</li>
</ul>
<h3>2.7.0: Aug 30 2008</h3>
<ul>
<li>Documentation: switch ChangeLog to UTF-8, improve mutithreads and
xmlParserCleanup docs</li>
<li>Portability fixes: Older Win32 platforms (Rob Richards), MSVC
porting fix (Rob Richards), Mac OS X regression tests (Sven Herzberg),
non GNUCC builds (Rob Richards), compilation on Haiku (Andreas Färber)
</li>
<li>Bug fixes: various realloc problems (Ashwin), potential double-free
(Ashwin), regexp crash, icrash with invalid whitespace facets (Rob
Richards), pattern fix when streaming (William Brack), various XML
parsing and validation fixes based on the W3C regression tests, reader
tree skipping function fix (Ashwin), Schemas regexps escaping fix
(Volker Grabsch), handling of entity push errors (Ashwin), fix a slowdown
when encoder cant serialize characters on output</li>
<li>Code cleanup: compilation fix without the reader, without the output
(Robert Schwebel), python whitespace (Martin), many space/tabs cleanups,
serious cleanup of the entity handling code</li>
<li>Improvement: switch parser to XML-1.0 5th edition, add parsing flags
for old versions, switch URI parsing to RFC 3986,
add xmlSchemaValidCtxtGetParserCtxt (Holger Kaelberer),
new hashing functions for dictionnaries (based on Stefan Behnel work),
improve handling of misplaced html/head/body in HTML parser, better
regression test tools and code coverage display, better algorithms
to detect various versions of the billion laughts attacks, make
arbitrary parser limits avoidable as a parser option</li>
</ul>
<h3>2.6.32: Apr 8 2008</h3>
<ul>
<li>Documentation: returning heap memory to kernel (Wolfram Sang),
trying to clarify xmlCleanupParser() use, xmlXPathContext improvement
(Jack Jansen), improve the *Recover* functions documentation,
XmlNodeType doc link fix (Martijn Arts)</li>
<li>Bug fixes: internal subset memory leak (Ashwin), avoid problem with
paths starting with // (Petr Sumbera), streaming XSD validation callback
patches (Ashwin), fix redirection on port other than 80 (William Brack),
SAX2 leak (Ashwin), XInclude fragment of own document (Chris Ryan),
regexp bug with '.' (Andrew Tosh), flush the writer at the end of the
document (Alfred Mickautsch), output I/O bug fix (William Brack),
writer CDATA output after a text node (Alex Khesin), UTF-16 encoding
detection (William Brack), fix handling of empty CDATA nodes for Safari
team, python binding problem with namespace nodes, improve HTML parsing
(Arnold Hendriks), regexp automata build bug, memory leak fix (Vasily
Chekalkin), XSD test crash, weird system parameter entity parsing problem,
allow save to file:///X:/ windows paths, various attribute normalisation
problems, externalSubsetSplit fix (Ashwin), attribute redefinition in
the DTD (Ashwin), fix in char ref parsing check (Alex Khesin), many
out of memory handling fixes (Ashwin), XPath out of memory handling fixes
(Alvaro Herrera), various realloc problems (Ashwin), UCS4 encoding
conversion buffer size (Christian Fruth), problems with EatName
functions on memory errors, BOM handling in external parsed entities
(Mark Rowe)</li>
<li>Code cleanup: fix build under VS 2008 (David Wimsey), remove useless
mutex in xmlDict (Florent Guilian), Mingw32 compilation fix (Carlo
Bramini), Win and MacOS EOL cleanups (Florent Guiliani), iconv need
a const detection (Roumen Petrov), simplify xmlSetProp (Julien Charbon),
cross compilation fixes for Mingw (Roumen Petrov), SCO Openserver build
fix (Florent Guiliani), iconv uses const on Win32 (Rob Richards),
duplicate code removal (Ashwin), missing malloc test and error reports
(Ashwin), VMS makefile fix (Tycho Hilhorst)</li>
<li>improvements: better plug of schematron in the normal error handling
(Tobias Minich)</li>
</ul>
<h3>2.6.31: Jan 11 2008</h3>
<ul>
<li>Security fix: missing of checks in UTF-8 parsing</li>
<li>Bug fixes: regexp bug, dump attribute from XHTML document, fix
xmlFree(NULL) to not crash in debug mode, Schematron parsing crash
(Rob Richards), global lock free on Windows (Marc-Antoine Ruel),
XSD crash due to double free (Rob Richards), indentation fix in
xmlTextWriterFullEndElement (Felipe Pena), error in attribute type
parsing if attribute redeclared, avoid crash in hash list scanner if
deleting elements, column counter bug fix (Christian Schmidt),
HTML embed element saving fix (Stefan Behnel), avoid -L/usr/lib
output from xml2-config (Fred Crozat), avoid an xmllint crash
(Stefan Kost), don't stop HTML parsing on out of range chars.
</li>
<li>Code cleanup: fix open() call third argument, regexp cut'n paste
copy error, unused variable in __xmlGlobalInitMutexLock (Hannes Eder),
some make distcheck realted fixes (John Carr)</li>
<li>Improvements: HTTP Header: includes port number (William Brack),
testURI --debug option, </li>
</ul>
<h3>2.6.30: Aug 23 2007</h3>
<ul>
<li>Portability: Solaris crash on error handling, windows path fixes
(Roland Schwarz and Rob Richards), mingw build (Roland Schwarz)</li>
<li>Bugfixes: xmlXPathNodeSetSort problem (William Brack), leak when
reusing a writer for a new document (Dodji Seketeli), Schemas
xsi:nil handling patch (Frank Gross), relative URI build problem
(Patrik Fimml), crash in xmlDocFormatDump, invalid char in comment
detection bug, fix disparity with xmlSAXUserParseMemory, automata
generation for complex regexp counts problems, Schemas IDC import
problems (Frank Gross), xpath predicate evailation error handling
(William Brack)</li>
</ul>
<h3>2.6.29: Jun 12 2007</h3>
<ul>
<li>Portability: patches from Andreas Stricke for WinCEi,
fix compilation warnings (William Brack), avoid warnings on Apple OS/X
(Wendy Doyle and Mark Rowe), Windows compilation and threading
improvements (Rob Richards), compilation against old Python versions,
new GNU tar changes (Ryan Hill)</li>
<li>Documentation: xmlURIUnescapeString comment, </li>
<li>Bugfixes: xmlBufferAdd problem (Richard Jones), 'make valgrind'
flag fix (Richard Jones), regexp interpretation of \,
htmlCreateDocParserCtxt (Jean-Daniel Dupas), configure.in
typo (Bjorn Reese), entity content failure, xmlListAppend() fix
(Georges-André Silber), XPath number serialization (William Brack),
nanohttp gzipped stream fix (William Brack and Alex Cornejo),
xmlCharEncFirstLine typo (Mark Rowe), uri bug (François Delyon),
XPath string value of PI nodes (William Brack), XPath node set
sorting bugs (William Brack), avoid outputting namespace decl
dups in the writer (Rob Richards), xmlCtxtReset bug, UTF-8 encoding
error handling, recustion on next in catalogs, fix a Relax-NG crash,
workaround wrong file: URIs, htmlNodeDumpFormatOutput on attributes,
invalid character in attribute detection bug, big comments before
internal subset streaming bug, HTML parsing of attributes with : in
the name, IDness of name in HTML (Dagfinn I. Mannsåker) </li>
<li>Improvement: keep URI query parts in raw form (Richard Jones),
embed tag support in HTML (Michael Day) </li>
</ul>
<h3>2.6.28: Apr 17 2007</h3>
<ul>
<li>Documentation: comment fixes (Markus Keim), xpath comments fixes too
(James Dennett)</li>
<li>Bug fixes: XPath bug (William Brack), HTML parser autoclose stack usage
(Usamah Malik), various regexp bug fixes (DV and William), path conversion
on Windows (Igor Zlatkovic), htmlCtxtReset fix (Michael Day), XPath
principal node of axis bug, HTML serialization of some codepoint
(Steven Rainwater), user data propagation in XInclude (Michael Day),
standalone and XML decl detection (Michael Day), Python id ouptut
for some id, fix the big python string memory leak, URI parsing fixes
(Stéphane Bidoul and William), long comments parsing bug (William),
concurrent threads initialization (Ted Phelps), invalid char
in text XInclude (William), XPath memory leak (William), tab in
python problems (Andreas Hanke), XPath node comparison error
(Oleg Paraschenko), cleanup patch for reader (Julien Reichel),
XML Schemas attribute group (William), HTML parsing problem (William),
fix char 0x2d in regexps (William), regexp quantifier range with
min occurs of 0 (William), HTML script/style parsing (Mike Day)</li>
<li>Improvement: make xmlTextReaderSetup() public</li>
<li>Compilation and postability: fix a missing include problem (William),
__ss_familly on AIX again (Björn Wiberg), compilation without zlib
(Michael Day), catalog patch for Win32 (Christian Ehrlicher),
Windows CE fixes (Andreas Stricke)</li>
<li>Various CVS to SVN infrastructure changes</li>
</ul>
<h3>2.6.27: Oct 25 2006</h3>
<ul>
<li>Portability fixes: file names on windows (Roland Schwingel,
Emelyanov Alexey), windows compile fixup (Rob Richards),
AIX iconv() is apparently case sensitive</li>
<li>improvements: Python XPath types mapping (Nic Ferrier), XPath optimization
(Kasimier), add xmlXPathCompiledEvalToBoolean (Kasimier), Python node
equality and comparison (Andreas Pakulat), xmlXPathCollectAndTest
improvememt (Kasimier), expose if library was compiled with zlib
support (Andrew Nosenko), cache for xmlSchemaIDCMatcher structs
(Kasimier), xmlTextConcat should work with comments and PIs (Rob
Richards), export htmlNewParserCtxt needed by Michael Day, refactoring
of catalog entity loaders (Michael Day), add XPointer support to
python bindings (Ross Reedstrom, Brian West and Stefan Anca),
try to sort out most file path to URI conversions and xmlPathToUri,
add --html --memory case to xmllint</li>
<li>building fix: fix --with-minimum (Felipe Contreras), VMS fix,
const'ification of HTML parser structures (Matthias Clasen),
portability fix (Emelyanov Alexey), wget autodetection (Peter
Breitenlohner), remove the build path recorded in the python
shared module, separate library flags for shared and static builds
(Mikhail Zabaluev), fix --with-minimum --with-sax1 builds, fix
--with-minimum --with-schemas builds</li>
<li>bug fix: xmlGetNodePath fix (Kasimier), xmlDOMWrapAdoptNode and
attribute (Kasimier), crash when using the recover mode,
xmlXPathEvalExpr problem (Kasimier), xmlXPathCompExprAdd bug (Kasimier),
missing destry in xmlFreeRMutex (Andrew Nosenko), XML Schemas fixes
(Kasimier), warning on entities processing, XHTML script and style
serialization (Kasimier), python generator for long types, bug in
xmlSchemaClearValidCtxt (Bertrand Fritsch), xmlSchemaXPathEvaluate
allocation bug (Marton Illes), error message end of line (Rob Richards),
fix attribute serialization in writer (Rob Richards), PHP4 DTD validation
crasher, parser safety patch (Ben Darnell), _private context propagation
when parsing entities (with Michael Day), fix entities behaviour when
using SAX, URI to file path fix (Mikhail Zabaluev), disapearing validity
context, arg error in SAX callback (Mike Hommey), fix mixed-content
autodetect when using --noblanks, fix xmlIOParseDTD error handling,
fix bug in xmlSplitQName on special Names, fix Relax-NG element content
validation bug, fix xmlReconciliateNs bug, fix potential attribute
XML parsing bug, fix line/column accounting in XML parser, chunking bug
in the HTML parser on script, try to detect obviously buggy HTML
meta encoding indications, bugs with encoding BOM and xmlSaveDoc,
HTML entities in attributes parsing, HTML minimized attribute values,
htmlReadDoc and htmlReadIO were broken, error handling bug in
xmlXPathEvalExpression (Olaf Walkowiak), fix a problem in
htmlCtxtUseOptions, xmlNewInputFromFile could leak (Marius Konitzer),
bug on misformed SSD regexps (Christopher Boumenot)
</li>
<li>documentation: warning about XML_PARSE_COMPACT (Kasimier Buchcik),
fix xmlXPathCastToString documentation, improve man pages for
xmllitn and xmlcatalog (Daniel Leidert), fixed comments of a few
functions</li>
</ul>
<h3>2.6.26: Jun 6 2006</h3>
<ul>
<li>portability fixes: Python detection (Joseph Sacco), compilation
error(William Brack and Graham Bennett), LynxOS patch (Olli Savia)</li>
<li>bug fixes: encoding buffer problem, mix of code and data in
xmlIO.c(Kjartan Maraas), entities in XSD validation (Kasimier Buchcik),
variousXSD validation fixes (Kasimier), memory leak in pattern (Rob
Richards andKasimier), attribute with colon in name (Rob Richards), XPath
leak inerror reporting (Aleksey Sanin), XInclude text include of
selfdocument.</li>
<li>improvements: Xpath optimizations (Kasimier), XPath object
cache(Kasimier)</li>
</ul>
<h3>2.6.25: Jun 6 2006:</h3>
<p>Do not use or package 2.6.25</p>
<h3>2.6.24: Apr 28 2006</h3>
<ul>
<li>Portability fixes: configure on Windows, testapi compile on windows
(Kasimier Buchcik, venkat naidu), Borland C++ 6 compile (Eric Zurcher),
HP-UX compiler workaround (Rick Jones), xml2-config bugfix, gcc-4.1
cleanups, Python detection scheme (Joseph Sacco), UTF-8 file paths on
Windows (Roland Schwingel).
</li>
<li>Improvements: xmlDOMWrapReconcileNamespaces xmlDOMWrapCloneNode (Kasimier
Buchcik), XML catalog debugging (Rick Jones), update to Unicode 4.01.</li>
<li>Bug fixes: xmlParseChunk() problem in 2.6.23, xmlParseInNodeContext()
on HTML docs, URI behaviour on Windows (Rob Richards), comment streaming
bug, xmlParseComment (with William Brack), regexp bug fixes (DV &amp;
Youri Golovanov), xmlGetNodePath on text/CDATA (Kasimier),
one Relax-NG interleave bug, xmllint --path and --valid,
XSD bugfixes (Kasimier), remove debug
left in Python bindings (Nic Ferrier), xmlCatalogAdd bug (Martin Cole),
xmlSetProp fixes (Rob Richards), HTML IDness (Rob Richards), a large
number of cleanups and small fixes based on Coverity reports, bug
in character ranges, Unicode tables const (Aivars Kalvans), schemas
fix (Stefan Kost), xmlRelaxNGParse error deallocation,
xmlSchemaAddSchemaDoc error deallocation, error handling on unallowed
code point, ixmllint --nonet to never reach the net (Gary Coady),
line break in writer after end PI (Jason Viers). </li>
<li>Documentation: man pages updates and cleanups (Daniel Leidert).</li>
<li>New features: Relax NG structure error handlers.</li>
</ul>
<h3>2.6.23: Jan 5 2006</h3>
<ul>
<li>portability fixes: Windows (Rob Richards), getaddrinfo on Windows
(Kolja Nowak, Rob Richards), icc warnings (Kjartan Maraas),
--with-minimum compilation fixes (William Brack), error case handling fix
on Solaris (Albert Chin), don't use 'list' as parameter name reported by
Samuel Diaz Garcia, more old Unices portability fixes (Albert Chin),
MinGW compilation (Mark Junker), HP-UX compiler warnings (Rick
Jones),</li>
<li>code cleanup: xmlReportError (Adrian Mouat), remove xmlBufferClose
(Geert Jansen), unreachable code (Oleksandr Kononenko), refactoring
parsing code (Bjorn Reese)</li>
<li>bug fixes: xmlBuildRelativeURI and empty path (William Brack),
combinatory explosion and performances in regexp code, leak in
xmlTextReaderReadString(), xmlStringLenDecodeEntities problem (Massimo
Morara), Identity Constraints bugs and a segfault (Kasimier Buchcik),
XPath pattern based evaluation bugs (DV &amp; Kasimier),
xmlSchemaContentModelDump() memory leak (Kasimier), potential leak in
xmlSchemaCheckCSelectorXPath(), xmlTextWriterVSprintf() misuse of
vsnprintf (William Brack), XHTML serialization fix (Rob Richards), CRLF
split problem (William), issues with non-namespaced attributes in
xmlAddChild() xmlAddNextSibling() and xmlAddPrevSibling() (Rob Richards),
HTML parsing of script, Python must not output to stdout (Nic Ferrier),
exclusive C14N namespace visibility (Aleksey Sanin), XSD dataype
totalDigits bug (Kasimier Buchcik), error handling when writing to an
xmlBuffer (Rob Richards), runtest schemas error not reported (Hisashi
Fujinaka), signed/unsigned problem in date/time code (Albert Chin), fix
XSI driven XSD validation (Kasimier), parsing of xs:decimal (Kasimier),
fix DTD writer output (Rob Richards), leak in xmlTextReaderReadInnerXml
(Gary Coady), regexp bug affecting schemas (Kasimier), configuration of
runtime debugging (Kasimier), xmlNodeBufGetContent bug on entity refs
(Oleksandr Kononenko), xmlRegExecPushString2 bug (Sreeni Nair),
compilation and build fixes (Michael Day), removed dependancies on
xmlSchemaValidError (Kasimier), bug with &lt;xml:foo/&gt;, more XPath
pattern based evaluation fixes (Kasimier)</li>
<li>improvements: XSD Schemas redefinitions/restrictions (Kasimier
Buchcik), node copy checks and fix for attribute (Rob Richards), counted
transition bug in regexps, ctxt-&gt;standalone = -2 to indicate no
standalone attribute was found, add xmlSchemaSetParserStructuredErrors()
(Kasimier Buchcik), add xmlTextReaderSchemaValidateCtxt() to API
(Kasimier), handle gzipped HTTP resources (Gary Coady), add
htmlDocDumpMemoryFormat. (Rob Richards),</li>
<li>documentation: typo (Michael Day), libxml man page (Albert Chin), save
function to XML buffer (Geert Jansen), small doc fix (Aron Stansvik),</li>
</ul>
<h3>2.6.22: Sep 12 2005</h3>
<ul>
<li>build fixes: compile without schematron (Stéphane Bidoul)</li>
<li>bug fixes: xmlDebugDumpNode on namespace node (Oleg Paraschenko)i,
CDATA push parser bug, xmlElemDump problem with XHTML1 doc,
XML_FEATURE_xxx clash with expat headers renamed XML_WITH_xxx, fix some
output formatting for meta element (Rob Richards), script and style
XHTML1 serialization (David Madore), Attribute derivation fixups in XSD
(Kasimier Buchcik), better IDC error reports (Kasimier Buchcik)</li>
<li>improvements: add XML_SAVE_NO_EMPTY xmlSaveOption (Rob Richards), add
XML_SAVE_NO_XHTML xmlSaveOption, XML Schemas improvements preparing for
derive (Kasimier Buchcik).</li>
<li>documentation: generation of gtk-doc like docs, integration with
devhelp.</li>
</ul>
<h3>2.6.21: Sep 4 2005</h3>
<ul>
<li>build fixes: Cygwin portability fixes (Gerrit P. Haase), calling
convention problems on Windows (Marcus Boerger), cleanups based on Linus'
sparse tool, update of win32/configure.js (Rob Richards), remove warnings
on Windows(Marcus Boerger), compilation without SAX1, detection of the
Python binary, use $GCC inestad of $CC = 'gcc' (Andrew W. Nosenko),
compilation/link with threads and old gcc, compile problem by C370 on
Z/OS,</li>
<li>bug fixes: http_proxy environments (Peter Breitenlohner), HTML UTF-8
bug (Jiri Netolicky), XPath NaN compare bug (William Brack),
htmlParseScript potential bug, Schemas regexp handling of spaces, Base64
Schemas comparisons NIST passes, automata build error xsd:all,
xmlGetNodePath for namespaced attributes (Alexander Pohoyda), xmlSchemas
foreign namespaces handling, XML Schemas facet comparison (Kupriyanov
Anatolij), xmlSchemaPSimpleTypeErr error report (Kasimier Buchcik), xml:
namespace ahndling in Schemas (Kasimier), empty model group in Schemas
(Kasimier), wilcard in Schemas (Kasimier), URI composition (William),
xs:anyType in Schemas (Kasimier), Python resolver emmitting error
messages directly, Python xmlAttr.parent (Jakub Piotr Clapa), trying to
fix the file path/URI conversion, xmlTextReaderGetAttribute fix (Rob
Richards), xmlSchemaFreeAnnot memleak (Kasimier), HTML UTF-8
serialization, streaming XPath, Schemas determinism detection problem,
XInclude bug, Schemas context type (Dean Hill), validation fix (Derek
Poon), xmlTextReaderGetAttribute[Ns] namespaces (Rob Richards), Schemas
type fix (Kuba Nowakowski), UTF-8 parser bug, error in encoding handling,
xmlGetLineNo fixes, bug on entities handling, entity name extraction in
error handling with XInclude, text nodes in HTML body tags (Gary Coady),
xml:id and IDness at the treee level fixes, XPath streaming patterns
bugs.</li>
<li>improvements: structured interfaces for schemas and RNG error reports
(Marcus Boerger), optimization of the char data inner loop parsing
(thanks to Behdad Esfahbod for the idea), schematron validation though
not finished yet, xmlSaveOption to omit XML declaration, keyref match
error reports (Kasimier), formal expression handling code not plugged
yet, more lax mode for the HTML parser, parser XML_PARSE_COMPACT option
for text nodes allocation.</li>
<li>documentation: xmllint man page had --nonet duplicated</li>
</ul>
<h3>2.6.20: Jul 10 2005</h3>
<ul>
<li>build fixes: Windows build (Rob Richards), Mingw compilation (Igor
Zlatkovic), Windows Makefile (Igor), gcc warnings (Kasimier and
andriy@google.com), use gcc weak references to pthread to avoid the
pthread dependancy on Linux, compilation problem (Steve Nairn), compiling
of subset (Morten Welinder), IPv6/ss_family compilation (William Brack),
compilation when disabling parts of the library, standalone test
distribution.</li>
<li>bug fixes: bug in lang(), memory cleanup on errors (William Brack),
HTTP query strings (Aron Stansvik), memory leak in DTD (William), integer
overflow in XPath (William), nanoftp buffer size, pattern "." apth fixup
(Kasimier), leak in tree reported by Malcolm Rowe, replaceNode patch
(Brent Hendricks), CDATA with NULL content (Mark Vakoc), xml:base fixup
on XInclude (William), pattern fixes (William), attribute bug in
exclusive c14n (Aleksey Sanin), xml:space and xml:lang with SAX2 (Rob
Richards), namespace trouble in complex parsing (Malcolm Rowe), XSD type
QNames fixes (Kasimier), XPath streaming fixups (William), RelaxNG bug
(Rob Richards), Schemas for Schemas fixes (Kasimier), removal of ID (Rob
Richards), a small RelaxNG leak, HTML parsing in push mode bug (James
Bursa), failure to detect UTF-8 parsing bugs in CDATA sections,
areBlanks() heuristic failure, duplicate attributes in DTD bug
(William).</li>
<li>improvements: lot of work on Schemas by Kasimier Buchcik both on
conformance and streaming, Schemas validation messages (Kasimier Buchcik,
Matthew Burgess), namespace removal at the python level (Brent
Hendricks), Update to new Schemas regression tests from W3C/Nist
(Kasimier), xmlSchemaValidateFile() (Kasimier), implementation of
xmlTextReaderReadInnerXml and xmlTextReaderReadOuterXml (James Wert),
standalone test framework and programs, new DOM import APIs
xmlDOMWrapReconcileNamespaces() xmlDOMWrapAdoptNode() and
xmlDOMWrapRemoveNode(), extension of xmllint capabilities for SAX and
Schemas regression tests, xmlStopParser() available in pull mode too,
ienhancement to xmllint --shell namespaces support, Windows port of the
standalone testing tools (Kasimier and William),
xmlSchemaValidateStream() xmlSchemaSAXPlug() and xmlSchemaSAXUnplug() SAX
Schemas APIs, Schemas xmlReader support.</li>
</ul>
<h3>2.6.19: Apr 02 2005</h3>
<ul>
<li>build fixes: drop .la from RPMs, --with-minimum build fix (William
Brack), use XML_SOCKLEN_T instead of SOCKLEN_T because it breaks with AIX
5.3 compiler, fixed elfgcchack.h generation and PLT reduction code on
Linux/ELF/gcc4</li>
<li>bug fixes: schemas type decimal fixups (William Brack), xmmlint return
code (Gerry Murphy), small schemas fixes (Matthew Burgess and GUY
Fabrice), workaround "DAV:" namespace brokeness in c14n (Aleksey Sanin),
segfault in Schemas (Kasimier Buchcik), Schemas attribute validation
(Kasimier), Prop related functions and xmlNewNodeEatName (Rob Richards),
HTML serialization of name attribute on a elements, Python error handlers
leaks and improvement (Brent Hendricks), uninitialized variable in
encoding code, Relax-NG validation bug, potential crash if
gnorableWhitespace is NULL, xmlSAXParseDoc and xmlParseDoc signatures,
switched back to assuming UTF-8 in case no encoding is given at
serialization time</li>
<li>improvements: lot of work on Schemas by Kasimier Buchcik on facets
checking and also mixed handling.</li>
<li></li>
</ul>
<h3>2.6.18: Mar 13 2005</h3>
<ul>
<li>build fixes: warnings (Peter Breitenlohner), testapi.c generation,
Bakefile support (Francesco Montorsi), Windows compilation (Joel Reed),
some gcc4 fixes, HP-UX portability fixes (Rick Jones).</li>
<li>bug fixes: xmlSchemaElementDump namespace (Kasimier Buchcik), push and
xmlreader stopping on non-fatal errors, thread support for dictionnaries
reference counting (Gary Coady), internal subset and push problem, URL
saved in xmlCopyDoc, various schemas bug fixes (Kasimier), Python paths
fixup (Stephane Bidoul), xmlGetNodePath and namespaces, xmlSetNsProp fix
(Mike Hommey), warning should not count as error (William Brack),
xmlCreatePushParser empty chunk, XInclude parser flags (William), cleanup
FTP and HTTP code to reuse the uri parsing and IPv6 (William),
xmlTextWriterStartAttributeNS fix (Rob Richards), XMLLINT_INDENT being
empty (William), xmlWriter bugs (Rob Richards), multithreading on Windows
(Rich Salz), xmlSearchNsByHref fix (Kasimier), Python binding leak (Brent
Hendricks), aliasing bug exposed by gcc4 on s390, xmlTextReaderNext bug
(Rob Richards), Schemas decimal type fixes (William Brack),
xmlByteConsumed static buffer (Ben Maurer).</li>
<li>improvement: speedup parsing comments and DTDs, dictionnary support for
hash tables, Schemas Identity constraints (Kasimier), streaming XPath
subset, xmlTextReaderReadString added (Bjorn Reese), Schemas canonical
values handling (Kasimier), add xmlTextReaderByteConsumed (Aron
Stansvik),</li>
<li>Documentation: Wiki support (Joel Reed)</li>
</ul>
<h3>2.6.17: Jan 16 2005</h3>
<ul>
<li>build fixes: Windows, warnings removal (William Brack),
maintainer-clean dependency(William), build in a different directory
(William), fixing --with-minimum configure build (William), BeOS build
(Marcin Konicki), Python-2.4 detection (William), compilation on AIX (Dan
McNichol)</li>
<li>bug fixes: xmlTextReaderHasAttributes (Rob Richards), xmlCtxtReadFile()
to use the catalog(s), loop on output (William Brack), XPath memory leak,
ID deallocation problem (Steve Shepard), debugDumpNode crash (William),
warning not using error callback (William), xmlStopParser bug (William),
UTF-16 with BOM on DTDs (William), namespace bug on empty elements in
push mode (Rob Richards), line and col computations fixups (Aleksey
Sanin), xmlURIEscape fix (William), xmlXPathErr on bad range (William),
patterns with too many steps, bug in RNG choice optimization, line number
sometimes missing.</li>
<li>improvements: XSD Schemas (Kasimier Buchcik), python generator
(William), xmlUTF8Strpos speedup (William), unicode Python strings
(William), XSD error reports (Kasimier Buchcik), Python __str__ call
serialize().</li>
<li>new APIs: added xmlDictExists(), GetLineNumber and GetColumnNumber for
the xmlReader (Aleksey Sanin), Dynamic Shared Libraries APIs (mostly Joel
Reed), error extraction API from regexps, new XMLSave option for format
(Phil Shafer)</li>
<li>documentation: site improvement (John Fleck), FAQ entries
(William).</li>
</ul>
<h3>2.6.16: Nov 10 2004</h3>
<ul>
<li>general hardening and bug fixing crossing all the API based on new
automated regression testing</li>
<li>build fix: IPv6 build and test on AIX (Dodji Seketeli)</li>
<li>bug fixes: problem with XML::Libxml reported by Petr Pajas, encoding
conversion functions return values, UTF-8 bug affecting XPath reported by
Markus Bertheau, catalog problem with NULL entries (William Brack)</li>
<li>documentation: fix to xmllint man page, some API function descritpion
were updated.</li>
<li>improvements: DTD validation APIs provided at the Python level (Brent
Hendricks)</li>
</ul>
<h3>2.6.15: Oct 27 2004</h3>
<ul>
<li>security fixes on the nanoftp and nanohttp modules</li>
<li>build fixes: xmllint detection bug in configure, building outside the
source tree (Thomas Fitzsimmons)</li>
<li>bug fixes: HTML parser on broken ASCII chars in names (William), Python
paths (Malcolm Tredinnick), xmlHasNsProp and default namespace (William),
saving to python file objects (Malcolm Tredinnick), DTD lookup fix
(Malcolm), save back &lt;group&gt; in catalogs (William), tree build
fixes (DV and Rob Richards), Schemas memory bug, structured error handler
on Python 64bits, thread local memory deallocation, memory leak reported
by Volker Roth, xmlValidateDtd in the presence of an internal subset,
entities and _private problem (William), xmlBuildRelativeURI error
(William).</li>
<li>improvements: better XInclude error reports (William), tree debugging
module and tests, convenience functions at the Reader API (Graham
Bennett), add support for PI in the HTML parser.</li>
</ul>
<h3>2.6.14: Sep 29 2004</h3>
<ul>
<li>build fixes: configure paths for xmllint and xsltproc, compilation
without HTML parser, compilation warning cleanups (William Brack &amp;
Malcolm Tredinnick), VMS makefile update (Craig Berry),</li>
<li>bug fixes: xmlGetUTF8Char (William Brack), QName properties (Kasimier
Buchcik), XInclude testing, Notation serialization, UTF8ToISO8859x
transcoding (Mark Itzcovitz), lots of XML Schemas cleanup and fixes
(Kasimier), ChangeLog cleanup (Stepan Kasal), memory fixes (Mark Vakoc),
handling of failed realloc(), out of bound array adressing in Schemas
date handling, Python space/tabs cleanups (Malcolm Tredinnick), NMTOKENS
E20 validation fix (Malcolm),</li>
<li>improvements: added W3C XML Schemas testsuite (Kasimier Buchcik), add
xmlSchemaValidateOneElement (Kasimier), Python exception hierearchy
(Malcolm Tredinnick), Python libxml2 driver improvement (Malcolm
Tredinnick), Schemas support for xsi:schemaLocation,
xsi:noNamespaceSchemaLocation, xsi:type (Kasimier Buchcik)</li>
</ul>
<h3>2.6.13: Aug 31 2004</h3>
<ul>
<li>build fixes: Windows and zlib (Igor Zlatkovic), -O flag with gcc,
Solaris compiler warning, fixing RPM BuildRequires,</li>
<li>fixes: DTD loading on Windows (Igor), Schemas error reports APIs
(Kasimier Buchcik), Schemas validation crash, xmlCheckUTF8 (William Brack
and Julius Mittenzwei), Schemas facet check (Kasimier), default namespace
problem (William), Schemas hexbinary empty values, encoding error could
genrate a serialization loop.</li>
<li>Improvements: Schemas validity improvements (Kasimier), added --path
and --load-trace options to xmllint</li>
<li>documentation: tutorial update (John Fleck)</li>
</ul>
<h3>2.6.12: Aug 22 2004</h3>
<ul>
<li>build fixes: fix --with-minimum, elfgcchack.h fixes (Peter
Breitenlohner), perl path lookup (William), diff on Solaris (Albert
Chin), some 64bits cleanups.</li>
<li>Python: avoid a warning with 2.3 (William Brack), tab and space mixes
(William), wrapper generator fixes (William), Cygwin support (Gerrit P.
Haase), node wrapper fix (Marc-Antoine Parent), XML Schemas support
(Torkel Lyng)</li>
<li>Schemas: a lot of bug fixes and improvements from Kasimier Buchcik</li>
<li>fixes: RVT fixes (William), XPath context resets bug (William), memory
debug (Steve Hay), catalog white space handling (Peter Breitenlohner),
xmlReader state after attribute reading (William), structured error
handler (William), XInclude generated xml:base fixup (William), Windows
memory reallocation problem (Steve Hay), Out of Memory conditions
handling (William and Olivier Andrieu), htmlNewDoc() charset bug,
htmlReadMemory init (William), a posteriori validation DTD base
(William), notations serialization missing, xmlGetNodePath (Dodji),
xmlCheckUTF8 (Diego Tartara), missing line numbers on entity
(William)</li>
<li>improvements: DocBook catalog build scrip (William), xmlcatalog tool
(Albert Chin), xmllint --c14n option, no_proxy environment (Mike Hommey),
xmlParseInNodeContext() addition, extend xmllint --shell, allow XInclude
to not generate start/end nodes, extend xmllint --version to include CVS
tag (William)</li>
<li>documentation: web pages fixes, validity API docs fixes (William)
schemas API fix (Eric Haszlakiewicz), xmllint man page (John Fleck)</li>
</ul>
<h3>2.6.11: July 5 2004</h3>
<ul>
<li>Schemas: a lot of changes and improvements by Kasimier Buchcik for
attributes, namespaces and simple types.</li>
<li>build fixes: --with-minimum (William Brack), some gcc cleanup
(William), --with-thread-alloc (William)</li>
<li>portability: Windows binary package change (Igor Zlatkovic), Catalog
path on Windows</li>
<li>documentation: update to the tutorial (John Fleck), xmllint return code
(John Fleck), man pages (Ville Skytta),</li>
<li>bug fixes: C14N bug serializing namespaces (Aleksey Sanin), testSAX
properly initialize the library (William), empty node set in XPath
(William), xmlSchemas errors (William), invalid charref problem pointed
by Morus Walter, XInclude xml:base generation (William), Relax-NG bug
with div processing (William), XPointer and xml:base problem(William),
Reader and entities, xmllint return code for schemas (William), reader
streaming problem (Steve Ball), DTD serialization problem (William),
libxml.m4 fixes (Mike Hommey), do not provide destructors as methods on
Python classes, xmlReader buffer bug, Python bindings memory interfaces
improvement (with Stéphane Bidoul), Fixed the push parser to be back to
synchronous behaviour.</li>
<li>improvement: custom per-thread I/O enhancement (Rob Richards), register
namespace in debug shell (Stefano Debenedetti), Python based regression
test for non-Unix users (William), dynamically increase the number of
XPath extension functions in Python and fix a memory leak (Marc-Antoine
Parent and William)</li>
<li>performance: hack done with Arjan van de Ven to reduce ELF footprint
and generated code on Linux, plus use gcc runtime profiling to optimize
the code generated in the RPM packages.</li>
</ul>
<h3>2.6.10: May 17 2004</h3>
<ul>
<li>Web page generated for ChangeLog</li>
<li>build fixes: --without-html problems, make check without make all</li>
<li>portability: problem with xpath.c on Windows (MSC and Borland), memcmp
vs. strncmp on Solaris, XPath tests on Windows (Mark Vakoc), C++ do not
use "list" as parameter name, make tests work with Python 1.5 (Ed
Davis),</li>
<li>improvements: made xmlTextReaderMode public, small buffers resizing
(Morten Welinder), add --maxmem option to xmllint, add
xmlPopInputCallback() for Matt Sergeant, refactoring of serialization
escaping, added escaping customization</li>
<li>bugfixes: xsd:extension (Taihei Goi), assorted regexp bugs (William
Brack), xmlReader end of stream problem, node deregistration with reader,
URI escaping and filemanes, XHTML1 formatting (Nick Wellnhofer), regexp
transition reduction (William), various XSD Schemas fixes (Kasimier
Buchcik), XInclude fallback problem (William), weird problems with DTD
(William), structured error handler callback context (William), reverse
xmlEncodeSpecialChars() behaviour back to escaping '"'</li>
</ul>
<h3>2.6.9: Apr 18 2004</h3>
<ul>
<li>implement xml:id Working Draft, relaxed XPath id() checking</li>
<li>bugfixes: xmlCtxtReset (Brent Hendricks), line number and CDATA (Dave
Beckett), Relax-NG compilation (William Brack), Regexp patches (with
William), xmlUriEscape (Mark Vakoc), a Relax-NG notAllowed problem (with
William), Relax-NG name classes compares (William), XInclude duplicate
fallback (William), external DTD encoding detection (William), a DTD
validation bug (William), xmlReader Close() fix, recusive extention
schemas</li>
<li>improvements: use xmlRead* APIs in test tools (Mark Vakoc), indenting
save optimization, better handle IIS broken HTTP redirect behaviour (Ian
Hummel), HTML parser frameset (James Bursa), libxml2-python RPM
dependancy, XML Schemas union support (Kasimier Buchcik), warning removal
clanup (William), keep ChangeLog compressed when installing from RPMs</li>
<li>documentation: examples and xmlDocDumpMemory docs (John Fleck), new
example (load, xpath, modify, save), xmlCatalogDump() comments,</li>
<li>Windows: Borland C++ builder (Eric Zurcher), work around Microsoft
compiler NaN handling bug (Mark Vakoc)</li>
</ul>
<h3>2.6.8: Mar 23 2004</h3>
<ul>
<li>First step of the cleanup of the serialization code and APIs</li>
<li>XML Schemas: mixed content (Adam Dickmeiss), QName handling fixes (Adam
Dickmeiss), anyURI for "" (John Belmonte)</li>
<li>Python: Canonicalization C14N support added (Anthony Carrico)</li>
<li>xmlDocCopyNode() extension (William)</li>
<li>Relax-NG: fix when processing XInclude results (William), external
reference in interleave (William), missing error on &lt;choice&gt;
failure (William), memory leak in schemas datatype facets.</li>
<li>xmlWriter: patch for better DTD support (Alfred Mickautsch)</li>
<li>bug fixes: xmlXPathLangFunction memory leak (Mike Hommey and William
Brack), no ID errors if using HTML_PARSE_NOERROR, xmlcatalog fallbacks to
URI on SYSTEM lookup failure, XInclude parse flags inheritance (William),
XInclude and XPointer fixes for entities (William), XML parser bug
reported by Holger Rauch, nanohttp fd leak (William), regexps char
groups '-' handling (William), dictionnary reference counting problems,
do not close stderr.</li>
<li>performance patches from Petr Pajas</li>
<li>Documentation fixes: XML_CATALOG_FILES in man pages (Mike Hommey)</li>
<li>compilation and portability fixes: --without-valid, catalog cleanups
(Peter Breitenlohner), MingW patch (Roland Schwingel), cross-compilation
to Windows (Christophe de Vienne), --with-html-dir fixup (Julio Merino
Vidal), Windows build (Eric Zurcher)</li>
</ul>
<h3>2.6.7: Feb 23 2004</h3>
<ul>
<li>documentation: tutorial updates (John Fleck), benchmark results</li>
<li>xmlWriter: updates and fixes (Alfred Mickautsch, Lucas Brasilino)</li>
<li>XPath optimization (Petr Pajas)</li>
<li>DTD ID handling optimization</li>
<li>bugfixes: xpath number with &gt; 19 fractional (William Brack), push
mode with unescaped '&gt;' characters, fix xmllint --stream --timing, fix
xmllint --memory --stream memory usage, xmlAttrSerializeTxtContent
handling NULL, trying to fix Relax-NG/Perl interface.</li>
<li>python: 2.3 compatibility, whitespace fixes (Malcolm Tredinnick)</li>
<li>Added relaxng option to xmllint --shell</li>
</ul>
<h3>2.6.6: Feb 12 2004</h3>
<ul>
<li>nanohttp and nanoftp: buffer overflow error on URI parsing (Igor and
William) reported by Yuuichi Teranishi</li>
<li>bugfixes: make test and path issues, xmlWriter attribute serialization
(William Brack), xmlWriter indentation (William), schemas validation
(Eric Haszlakiewicz), XInclude dictionnaries issues (William and Oleg
Paraschenko), XInclude empty fallback (William), HTML warnings (William),
XPointer in XInclude (William), Python namespace serialization,
isolat1ToUTF8 bound error (Alfred Mickautsch), output of parameter
entities in internal subset (William), internal subset bug in push mode,
&lt;xs:all&gt; fix (Alexey Sarytchev)</li>
<li>Build: fix for automake-1.8 (Alexander Winston), warnings removal
(Philip Ludlam), SOCKLEN_T detection fixes (Daniel Richard), fix
--with-minimum configuration.</li>
<li>XInclude: allow the 2001 namespace without warning.</li>
<li>Documentation: missing example/index.html (John Fleck), version
dependancies (John Fleck)</li>
<li>reader API: structured error reporting (Steve Ball)</li>
<li>Windows compilation: mingw, msys (Mikhail Grushinskiy), function
prototype (Cameron Johnson), MSVC6 compiler warnings, _WINSOCKAPI_
patch</li>
<li>Parsers: added xmlByteConsumed(ctxt) API to get the byte offest in
input.</li>
</ul>
<h3>2.6.5: Jan 25 2004</h3>
<ul>
<li>Bugfixes: dictionnaries for schemas (William Brack), regexp segfault
(William), xs:all problem (William), a number of XPointer bugfixes
(William), xmllint error go to stderr, DTD validation problem with
namespace, memory leak (William), SAX1 cleanup and minimal options fixes
(Mark Vadoc), parser context reset on error (Shaun McCance), XPath union
evaluation problem (William) , xmlReallocLoc with NULL (Aleksey Sanin),
XML Schemas double free (Steve Ball), XInclude with no href, argument
callbacks order for XPath callbacks (Frederic Peters)</li>
<li>Documentation: python scripts (William Brack), xslt stylesheets (John
Fleck), doc (Sven Zimmerman), I/O example.</li>
<li>Python bindings: fixes (William), enum support (Stéphane Bidoul),
structured error reporting (Stéphane Bidoul)</li>
<li>XInclude: various fixes for conformance, problem related to dictionnary
references (William &amp; me), recursion (William)</li>
<li>xmlWriter: indentation (Lucas Brasilino), memory leaks (Alfred
Mickautsch),</li>
<li>xmlSchemas: normalizedString datatype (John Belmonte)</li>
<li>code cleanup for strings functions (William)</li>
<li>Windows: compiler patches (Mark Vakoc)</li>
<li>Parser optimizations, a few new XPath and dictionnary APIs for future
XSLT optimizations.</li>
</ul>
<h3>2.6.4: Dec 24 2003</h3>
<ul>
<li>Windows build fixes (Igor Zlatkovic)</li>
<li>Some serious XInclude problems reported by Oleg Paraschenko and</li>
<li>Unix and Makefile packaging fixes (me, William Brack,</li>
<li>Documentation improvements (John Fleck, William Brack), example fix
(Lucas Brasilino)</li>
<li>bugfixes: xmlTextReaderExpand() with xmlReaderWalker, XPath handling of
NULL strings (William Brack) , API building reader or parser from
filedescriptor should not close it, changed XPath sorting to be stable
again (William Brack), xmlGetNodePath() generating '(null)' (William
Brack), DTD validation and namespace bug (William Brack), XML Schemas
double inclusion behaviour</li>
</ul>
<h3>2.6.3: Dec 10 2003</h3>
<ul>
<li>documentation updates and cleanup (DV, William Brack, John Fleck)</li>
<li>added a repository of examples, examples from Aleksey Sanin, Dodji
Seketeli, Alfred Mickautsch</li>
<li>Windows updates: Mark Vakoc, Igor Zlatkovic, Eric Zurcher, Mingw
(Kenneth Haley)</li>
<li>Unicode range checking (William Brack)</li>
<li>code cleanup (William Brack)</li>
<li>Python bindings: doc (John Fleck), bug fixes</li>
<li>UTF-16 cleanup and BOM issues (William Brack)</li>
<li>bug fixes: ID and xmlReader validation, XPath (William Brack),
xmlWriter (Alfred Mickautsch), hash.h inclusion problem, HTML parser
(James Bursa), attribute defaulting and validation, some serialization
cleanups, XML_GET_LINE macro, memory debug when using threads (William
Brack), serialization of attributes and entities content, xmlWriter
(Daniel Schulman)</li>
<li>XInclude bugfix, new APIs and update to the last version including the
namespace change.</li>
<li>XML Schemas improvements: include (Robert Stepanek), import and
namespace handling, fixed the regression tests troubles, added examples
based on Eric van der Vlist book, regexp fixes</li>
<li>preliminary pattern support for streaming (needed for schemas
constraints), added xmlTextReaderPreservePattern() to collect subdocument
when streaming.</li>
<li>various fixes in the structured error handling</li>
</ul>
<h3>2.6.2: Nov 4 2003</h3>
<ul>
<li>XPath context unregistration fixes</li>
<li>text node coalescing fixes (Mark Lilback)</li>
<li>API to screate a W3C Schemas from an existing document (Steve Ball)</li>
<li>BeOS patches (Marcin 'Shard' Konicki)</li>
<li>xmlStrVPrintf function added (Aleksey Sanin)</li>
<li>compilation fixes (Mark Vakoc)</li>
<li>stdin parsing fix (William Brack)</li>
<li>a posteriori DTD validation fixes</li>
<li>xmlReader bug fixes: Walker fixes, python bindings</li>
<li>fixed xmlStopParser() to really stop the parser and errors</li>
<li>always generate line numbers when using the new xmlReadxxx
functions</li>
<li>added XInclude support to the xmlReader interface</li>
<li>implemented XML_PARSE_NONET parser option</li>
<li>DocBook XSLT processing bug fixed</li>
<li>HTML serialization for &lt;p&gt; elements (William Brack and me)</li>
<li>XPointer failure in XInclude are now handled as resource errors</li>
<li>fixed xmllint --html to use the HTML serializer on output (added
--xmlout to implement the previous behaviour of saving it using the XML
serializer)</li>
</ul>
<h3>2.6.1: Oct 28 2003</h3>
<ul>
<li>Mostly bugfixes after the big 2.6.0 changes</li>
<li>Unix compilation patches: libxml.m4 (Patrick Welche), warnings cleanup
(William Brack)</li>
<li>Windows compilation patches (Joachim Bauch, Stephane Bidoul, Igor
Zlatkovic)</li>
<li>xmlWriter bugfix (Alfred Mickautsch)</li>
<li>chvalid.[ch]: couple of fixes from Stephane Bidoul</li>
<li>context reset: error state reset, push parser reset (Graham
Bennett)</li>
<li>context reuse: generate errors if file is not readable</li>
<li>defaulted attributes for element coming from internal entities
(Stephane Bidoul)</li>
<li>Python: tab and spaces mix (William Brack)</li>
<li>Error handler could crash in DTD validation in 2.6.0</li>
<li>xmlReader: do not use the document or element _private field</li>
<li>testSAX.c: avoid a problem with some PIs (Massimo Morara)</li>
<li>general bug fixes: mandatory encoding in text decl, serializing
Document Fragment nodes, xmlSearchNs 2.6.0 problem (Kasimier Buchcik),
XPath errors not reported, slow HTML parsing of large documents.</li>
</ul>
<h3>2.6.0: Oct 20 2003</h3>
<ul>
<li>Major revision release: should be API and ABI compatible but got a lot
of change</li>
<li>Increased the library modularity, far more options can be stripped out,
a --with-minimum configuration will weight around 160KBytes</li>
<li>Use per parser and per document dictionnary, allocate names and small
text nodes from the dictionnary</li>
<li>Switch to a SAX2 like parser rewrote most of the XML parser core,
provides namespace resolution and defaulted attributes, minimize memory
allocations and copies, namespace checking and specific error handling,
immutable buffers, make predefined entities static structures, etc...</li>
<li>rewrote all the error handling in the library, all errors can be
intercepted at a structured level, with precise information
available.</li>
<li>New simpler and more generic XML and HTML parser APIs, allowing to
easilly modify the parsing options and reuse parser context for multiple
consecutive documents.</li>
<li>Similar new APIs for the xmlReader, for options and reuse, provided new
functions to access content as const strings, use them for Python
bindings</li>
<li>a lot of other smaller API improvements: xmlStrPrintf (Aleksey Sanin),
Walker i.e. reader on a document tree based on Alfred Mickautsch code,
make room in nodes for line numbers, reference counting and future PSVI
extensions, generation of character ranges to be checked with faster
algorithm (William), xmlParserMaxDepth (Crutcher Dunnavant), buffer
access</li>
<li>New xmlWriter API provided by Alfred Mickautsch</li>
<li>Schemas: base64 support by Anthony Carrico</li>
<li>Parser&lt;-&gt;HTTP integration fix, proper processing of the Mime-Type
and charset information if available.</li>
<li>Relax-NG: bug fixes including the one reported by Martijn Faassen and
zeroOrMore, better error reporting.</li>
<li>Python bindings (Stéphane Bidoul), never use stdout for errors
output</li>
<li>Portability: all the headers have macros for export and calling
convention definitions (Igor Zlatkovic), VMS update (Craig A. Berry),
Windows: threads (Jesse Pelton), Borland compiler (Eric Zurcher, Igor),
Mingw (Igor), typos (Mark Vakoc), beta version (Stephane Bidoul),
warning cleanups on AIX and MIPS compilers (William Brack), BeOS (Marcin
'Shard' Konicki)</li>
<li>Documentation fixes and README (William Brack), search fix (William),
tutorial updates (John Fleck), namespace docs (Stefan Kost)</li>
<li>Bug fixes: xmlCleanupParser (Dave Beckett), threading uninitialized
mutexes, HTML doctype lowercase, SAX/IO (William), compression detection
and restore (William), attribute declaration in DTDs (William), namespace
on attribute in HTML output (William), input filename (Rob Richards),
namespace DTD validation, xmlReplaceNode (Chris Ryland), I/O callbacks
(Markus Keim), CDATA serialization (Shaun McCance), xmlReader (Peter
Derr), high codepoint charref like &amp;#x10FFFF;, buffer access in push
mode (Justin Fletcher), TLS threads on Windows (Jesse Pelton), XPath bug
(William), xmlCleanupParser (Marc Liyanage), CDATA output (William), HTTP
error handling.</li>
<li>xmllint options: --dtdvalidfpi for Tobias Reif, --sax1 for compat
testing, --nodict for building without tree dictionnary, --nocdata to
replace CDATA by text, --nsclean to remove surperfluous namespace
declarations</li>
<li>added xml2-config --libtool-libs option from Kevin P. Fleming</li>
<li>a lot of profiling and tuning of the code, speedup patch for
xmlSearchNs() by Luca Padovani. The xmlReader should do far less
allocation and it speed should get closer to SAX. Chris Anderson worked
on speeding and cleaning up repetitive checking code.</li>
<li>cleanup of "make tests"</li>
<li>libxml-2.0-uninstalled.pc from Malcolm Tredinnick</li>
<li>deactivated the broken docBook SGML parser code and plugged the XML
parser instead.</li>
</ul>
<h3>2.5.11: Sep 9 2003</h3>
<p>A bugfix only release:</p>
<ul>
<li>risk of crash in Relax-NG</li>
<li>risk of crash when using multithreaded programs</li>
</ul>
<h3>2.5.10: Aug 15 2003</h3>
<p>A bugfixes only release</p>
<ul>
<li>Windows Makefiles (William Brack)</li>
<li>UTF-16 support fixes (Mark Itzcovitz)</li>
<li>Makefile and portability (William Brack) automake, Linux alpha, Mingw
on Windows (Mikhail Grushinskiy)</li>
<li>HTML parser (Oliver Stoeneberg)</li>
<li>XInclude performance problem reported by Kevin Ruscoe</li>
<li>XML parser performance problem reported by Grant Goodale</li>
<li>xmlSAXParseDTD() bug fix from Malcolm Tredinnick</li>
<li>and a couple other cleanup</li>
</ul>
<h3>2.5.9: Aug 9 2003</h3>
<ul>
<li>bugfixes: IPv6 portability, xmlHasNsProp (Markus Keim), Windows build
(Wiliam Brake, Jesse Pelton, Igor), Schemas (Peter Sobisch), threading
(Rob Richards), hexBinary type (), UTF-16 BOM (Dodji Seketeli),
xmlReader, Relax-NG schemas compilation, namespace handling, EXSLT (Sean
Griffin), HTML parsing problem (William Brack), DTD validation for mixed
content + namespaces, HTML serialization, library initialization,
progressive HTML parser</li>
<li>better interfaces for Relax-NG error handling (Joachim Bauch, )</li>
<li>adding xmlXIncludeProcessTree() for XInclud'ing in a subtree</li>
<li>doc fixes and improvements (John Fleck)</li>
<li>configure flag for -with-fexceptions when embedding in C++</li>
<li>couple of new UTF-8 helper functions (William Brack)</li>
<li>general encoding cleanup + ISO-8859-x without iconv (Peter Jacobi)</li>
<li>xmlTextReader cleanup + enum for node types (Bjorn Reese)</li>
<li>general compilation/warning cleanup Solaris/HP-UX/... (William
Brack)</li>
</ul>
<h3>2.5.8: Jul 6 2003</h3>
<ul>
<li>bugfixes: XPath, XInclude, file/URI mapping, UTF-16 save (Mark
Itzcovitz), UTF-8 checking, URI saving, error printing (William Brack),
PI related memleak, compilation without schemas or without xpath (Joerg
Schmitz-Linneweber/Garry Pennington), xmlUnlinkNode problem with DTDs,
rpm problem on , i86_64, removed a few compilation problems from 2.5.7,
xmlIOParseDTD, and xmlSAXParseDTD (Malcolm Tredinnick)</li>
<li>portability: DJGPP (MsDos) , OpenVMS (Craig A. Berry)</li>
<li>William Brack fixed multithreading lock problems</li>
<li>IPv6 patch for FTP and HTTP accesses (Archana Shah/Wipro)</li>
<li>Windows fixes (Igor Zlatkovic, Eric Zurcher), threading (Stéphane
Bidoul)</li>
<li>A few W3C Schemas Structure improvements</li>
<li>W3C Schemas Datatype improvements (Charlie Bozeman)</li>
<li>Python bindings for thread globals (Stéphane Bidoul), and method/class
generator</li>
<li>added --nonet option to xmllint</li>
<li>documentation improvements (John Fleck)</li>
</ul>
<h3>2.5.7: Apr 25 2003</h3>
<ul>
<li>Relax-NG: Compiling to regexp and streaming validation on top of the
xmlReader interface, added to xmllint --stream</li>
<li>xmlReader: Expand(), Next() and DOM access glue, bug fixes</li>
<li>Support for large files: RGN validated a 4.5GB instance</li>
<li>Thread support is now configured in by default</li>
<li>Fixes: update of the Trio code (Bjorn), WXS Date and Duration fixes
(Charles Bozeman), DTD and namespaces (Brent Hendricks), HTML push parser
and zero bytes handling, some missing Windows file path conversions,
behaviour of the parser and validator in the presence of "out of memory"
error conditions</li>
<li>extended the API to be able to plug a garbage collecting memory
allocator, added xmlMallocAtomic() and modified the allocations
accordingly.</li>
<li>Performances: removed excessive malloc() calls, speedup of the push and
xmlReader interfaces, removed excessive thread locking</li>
<li>Documentation: man page (John Fleck), xmlReader documentation</li>
<li>Python: adding binding for xmlCatalogAddLocal (Brent M Hendricks)</li>
</ul>
<h3>2.5.6: Apr 1 2003</h3>
<ul>
<li>Fixed W3C XML Schemas datatype, should be compliant now except for
binHex and base64 which are not supported yet.</li>
<li>bug fixes: non-ASCII IDs, HTML output, XInclude on large docs and
XInclude entities handling, encoding detection on external subsets, XML
Schemas bugs and memory leaks, HTML parser (James Bursa)</li>
<li>portability: python/trio (Albert Chin), Sun compiler warnings</li>
<li>documentation: added --relaxng option to xmllint man page (John)</li>
<li>improved error reporting: xml:space, start/end tag mismatches, Relax NG
errors</li>
</ul>
<h3>2.5.5: Mar 24 2003</h3>
<ul>
<li>Lot of fixes on the Relax NG implementation. More testing including
DocBook and TEI examples.</li>
<li>Increased the support for W3C XML Schemas datatype</li>
<li>Several bug fixes in the URI handling layer</li>
<li>Bug fixes: HTML parser, xmlReader, DTD validation, XPath, encoding
conversion, line counting in the parser.</li>
<li>Added support for $XMLLINT_INDENT environment variable, FTP delete</li>
<li>Fixed the RPM spec file name</li>
</ul>
<h3>2.5.4: Feb 20 2003</h3>
<ul>
<li>Conformance testing and lot of fixes on Relax NG and XInclude
implementation</li>
<li>Implementation of XPointer element() scheme</li>
<li>Bug fixes: XML parser, XInclude entities merge, validity checking on
namespaces,
<p>2 serialization bugs, node info generation problems, a DTD regexp
generation problem.</p>
</li>
<li>Portability: windows updates and path canonicalization (Igor)</li>
<li>A few typo fixes (Kjartan Maraas)</li>
<li>Python bindings generator fixes (Stephane Bidoul)</li>
</ul>
<h3>2.5.3: Feb 10 2003</h3>
<ul>
<li>RelaxNG and XML Schemas datatypes improvements, and added a first
version of RelaxNG Python bindings</li>
<li>Fixes: XLink (Sean Chittenden), XInclude (Sean Chittenden), API fix for
serializing namespace nodes, encoding conversion bug, XHTML1
serialization</li>
<li>Portability fixes: Windows (Igor), AMD 64bits RPM spec file</li>
</ul>
<h3>2.5.2: Feb 5 2003</h3>
<ul>
<li>First implementation of RelaxNG, added --relaxng flag to xmllint</li>
<li>Schemas support now compiled in by default.</li>
<li>Bug fixes: DTD validation, namespace checking, XInclude and entities,
delegateURI in XML Catalogs, HTML parser, XML reader (Stéphane Bidoul),
XPath parser and evaluation, UTF8ToUTF8 serialization, XML reader memory
consumption, HTML parser, HTML serialization in the presence of
namespaces</li>
<li>added an HTML API to check elements and attributes.</li>
<li>Documentation improvement, PDF for the tutorial (John Fleck), doc
patches (Stefan Kost)</li>
<li>Portability fixes: NetBSD (Julio Merino), Windows (Igor Zlatkovic)</li>
<li>Added python bindings for XPointer, contextual error reporting
(Stéphane Bidoul)</li>
<li>URI/file escaping problems (Stefano Zacchiroli)</li>
</ul>
<h3>2.5.1: Jan 8 2003</h3>
<ul>
<li>Fixes a memory leak and configuration/compilation problems in 2.5.0</li>
<li>documentation updates (John)</li>
<li>a couple of XmlTextReader fixes</li>
</ul>
<h3>2.5.0: Jan 6 2003</h3>
<ul>
<li>New <a href="xmlreader.html">XmltextReader interface</a> based on C#
API (with help of Stéphane Bidoul)</li>
<li>Windows: more exports, including the new API (Igor)</li>
<li>XInclude fallback fix</li>
<li>Python: bindings for the new API, packaging (Stéphane Bidoul),
drv_libxml2.py Python xml.sax driver (Stéphane Bidoul), fixes, speedup
and iterators for Python-2.2 (Hannu Krosing)</li>
<li>Tutorial fixes (john Fleck and Niraj Tolia) xmllint man update
(John)</li>
<li>Fix an XML parser bug raised by Vyacheslav Pindyura</li>
<li>Fix for VMS serialization (Nigel Hall) and config (Craig A. Berry)</li>
<li>Entities handling fixes</li>
<li>new API to optionally track node creation and deletion (Lukas
Schroeder)</li>
<li>Added documentation for the XmltextReader interface and some <a
href="guidelines.html">XML guidelines</a></li>
</ul>
<h3>2.4.30: Dec 12 2002</h3>
<ul>
<li>2.4.29 broke the python bindings, rereleasing</li>
<li>Improvement/fixes of the XML API generator, and couple of minor code
fixes.</li>
</ul>
<h3>2.4.29: Dec 11 2002</h3>
<ul>
<li>Windows fixes (Igor): Windows CE port, pthread linking, python bindings
(Stéphane Bidoul), Mingw (Magnus Henoch), and export list updates</li>
<li>Fix for prev in python bindings (ERDI Gergo)</li>
<li>Fix for entities handling (Marcus Clarke)</li>
<li>Refactored the XML and HTML dumps to a single code path, fixed XHTML1
dump</li>
<li>Fix for URI parsing when handling URNs with fragment identifiers</li>
<li>Fix for HTTP URL escaping problem</li>
<li>added an TextXmlReader (C#) like API (work in progress)</li>
<li>Rewrote the API in XML generation script, includes a C parser and saves
more information needed for C# bindings</li>
</ul>
<h3>2.4.28: Nov 22 2002</h3>
<ul>
<li>a couple of python binding fixes</li>
<li>2 bug fixes in the XML push parser</li>
<li>potential memory leak removed (Martin Stoilov)</li>
<li>fix to the configure script for Unix (Dimitri Papadopoulos)</li>
<li>added encoding support for XInclude parse="text"</li>
<li>autodetection of XHTML1 and specific serialization rules added</li>
<li>nasty threading bug fixed (William Brack)</li>
</ul>
<h3>2.4.27: Nov 17 2002</h3>
<ul>
<li>fixes for the Python bindings</li>
<li>a number of bug fixes: SGML catalogs, xmlParseBalancedChunkMemory(),
HTML parser, Schemas (Charles Bozeman), document fragment support
(Christian Glahn), xmlReconciliateNs (Brian Stafford), XPointer,
xmlFreeNode(), xmlSAXParseMemory (Peter Jones), xmlGetNodePath (Petr
Pajas), entities processing</li>
<li>added grep to xmllint --shell</li>
<li>VMS update patch from Craig A. Berry</li>
<li>cleanup of the Windows build with support for more compilers (Igor),
better thread support on Windows</li>
<li>cleanup of Unix Makefiles and spec file</li>
<li>Improvements to the documentation (John Fleck)</li>
</ul>
<h3>2.4.26: Oct 18 2002</h3>
<ul>
<li>Patches for Windows CE port, improvements on Windows paths handling</li>
<li>Fixes to the validation code (DTD and Schemas), xmlNodeGetPath() ,
HTML serialization, Namespace compliance, and a number of small
problems</li>
</ul>
<h3>2.4.25: Sep 26 2002</h3>
<ul>
<li>A number of bug fixes: XPath, validation, Python bindings, DOM and
tree, xmlI/O, Html</li>
<li>Serious rewrite of XInclude</li>
<li>Made XML Schemas regexp part of the default build and APIs, small fix
and improvement of the regexp core</li>
<li>Changed the validation code to reuse XML Schemas regexp APIs</li>
<li>Better handling of Windows file paths, improvement of Makefiles (Igor,
Daniel Gehriger, Mark Vakoc)</li>
<li>Improved the python I/O bindings, the tests, added resolver and regexp
APIs</li>
<li>New logos from Marc Liyanage</li>
<li>Tutorial improvements: John Fleck, Christopher Harris</li>
<li>Makefile: Fixes for AMD x86_64 (Mandrake), DESTDIR (Christophe
Merlet)</li>
<li>removal of all stderr/perror use for error reporting</li>
<li>Better error reporting: XPath and DTD validation</li>
<li>update of the trio portability layer (Bjorn Reese)</li>
</ul>
<p><strong>2.4.24: Aug 22 2002</strong></p>
<ul>
<li>XPath fixes (William), xf:escape-uri() (Wesley Terpstra)</li>
<li>Python binding fixes: makefiles (William), generator, rpm build, x86-64
(fcrozat)</li>
<li>HTML &lt;style&gt; and boolean attributes serializer fixes</li>
<li>C14N improvements by Aleksey</li>
<li>doc cleanups: Rick Jones</li>
<li>Windows compiler makefile updates: Igor and Elizabeth Barham</li>
<li>XInclude: implementation of fallback and xml:base fixup added</li>
</ul>
<h3>2.4.23: July 6 2002</h3>
<ul>
<li>performances patches: Peter Jacobi</li>
<li>c14n fixes, testsuite and performances: Aleksey Sanin</li>
<li>added xmlDocFormatDump: Chema Celorio</li>
<li>new tutorial: John Fleck</li>
<li>new hash functions and performances: Sander Vesik, portability fix from
Peter Jacobi</li>
<li>a number of bug fixes: XPath (William Brack, Richard Jinks), XML and
HTML parsers, ID lookup function</li>
<li>removal of all remaining sprintf: Aleksey Sanin</li>
</ul>
<h3>2.4.22: May 27 2002</h3>
<ul>
<li>a number of bug fixes: configure scripts, base handling, parser, memory
usage, HTML parser, XPath, documentation (Christian Cornelssen),
indentation, URI parsing</li>
<li>Optimizations for XMLSec, fixing and making public some of the network
protocol handlers (Aleksey)</li>
<li>performance patch from Gary Pennington</li>
<li>Charles Bozeman provided date and time support for XML Schemas
datatypes</li>
</ul>
<h3>2.4.21: Apr 29 2002</h3>
<p>This release is both a bug fix release and also contains the early XML
Schemas <a href="http://www.w3.org/TR/xmlschema-1/">structures</a> and <a
href="http://www.w3.org/TR/xmlschema-2/">datatypes</a> code, beware, all
interfaces are likely to change, there is huge holes, it is clearly a work in
progress and don't even think of putting this code in a production system,
it's actually not compiled in by default. The real fixes are:</p>
<ul>
<li>a couple of bugs or limitations introduced in 2.4.20</li>
<li>patches for Borland C++ and MSC by Igor</li>
<li>some fixes on XPath strings and conformance patches by Richard
Jinks</li>
<li>patch from Aleksey for the ExcC14N specification</li>
<li>OSF/1 bug fix by Bjorn</li>
</ul>
<h3>2.4.20: Apr 15 2002</h3>
<ul>
<li>bug fixes: file descriptor leak, XPath, HTML output, DTD validation</li>
<li>XPath conformance testing by Richard Jinks</li>
<li>Portability fixes: Solaris, MPE/iX, Windows, OSF/1, python bindings,
libxml.m4</li>
</ul>
<h3>2.4.19: Mar 25 2002</h3>
<ul>
<li>bug fixes: half a dozen XPath bugs, Validation, ISO-Latin to UTF8
encoder</li>
<li>portability fixes in the HTTP code</li>
<li>memory allocation checks using valgrind, and profiling tests</li>
<li>revamp of the Windows build and Makefiles</li>
</ul>
<h3>2.4.18: Mar 18 2002</h3>
<ul>
<li>bug fixes: tree, SAX, canonicalization, validation, portability,
XPath</li>
<li>removed the --with-buffer option it was becoming unmaintainable</li>
<li>serious cleanup of the Python makefiles</li>
<li>speedup patch to XPath very effective for DocBook stylesheets</li>
<li>Fixes for Windows build, cleanup of the documentation</li>
</ul>
<h3>2.4.17: Mar 8 2002</h3>
<ul>
<li>a lot of bug fixes, including "namespace nodes have no parents in
XPath"</li>
<li>fixed/improved the Python wrappers, added more examples and more
regression tests, XPath extension functions can now return node-sets</li>
<li>added the XML Canonicalization support from Aleksey Sanin</li>
</ul>
<h3>2.4.16: Feb 20 2002</h3>
<ul>
<li>a lot of bug fixes, most of them were triggered by the XML Testsuite
from OASIS and W3C. Compliance has been significantly improved.</li>
<li>a couple of portability fixes too.</li>
</ul>
<h3>2.4.15: Feb 11 2002</h3>
<ul>
<li>Fixed the Makefiles, especially the python module ones</li>
<li>A few bug fixes and cleanup</li>
<li>Includes cleanup</li>
</ul>
<h3>2.4.14: Feb 8 2002</h3>
<ul>
<li>Change of License to the <a
href="http://www.opensource.org/licenses/mit-license.html">MIT
License</a> basically for integration in XFree86 codebase, and removing
confusion around the previous dual-licensing</li>
<li>added Python bindings, beta software but should already be quite
complete</li>
<li>a large number of fixes and cleanups, especially for all tree
manipulations</li>
<li>cleanup of the headers, generation of a reference API definition in
XML</li>
</ul>
<h3>2.4.13: Jan 14 2002</h3>
<ul>
<li>update of the documentation: John Fleck and Charlie Bozeman</li>
<li>cleanup of timing code from Justin Fletcher</li>
<li>fixes for Windows and initial thread support on Win32: Igor and Serguei
Narojnyi</li>
<li>Cygwin patch from Robert Collins</li>
<li>added xmlSetEntityReferenceFunc() for Keith Isdale work on xsldbg</li>
</ul>
<h3>2.4.12: Dec 7 2001</h3>
<ul>
<li>a few bug fixes: thread (Gary Pennington), xmllint (Geert Kloosterman),
XML parser (Robin Berjon), XPointer (Danny Jamshy), I/O cleanups
(robert)</li>
<li>Eric Lavigne contributed project files for MacOS</li>
<li>some makefiles cleanups</li>
</ul>
<h3>2.4.11: Nov 26 2001</h3>
<ul>
<li>fixed a couple of errors in the includes, fixed a few bugs, some code
cleanups</li>
<li>xmllint man pages improvement by Heiko Rupp</li>
<li>updated VMS build instructions from John A Fotheringham</li>
<li>Windows Makefiles updates from Igor</li>
</ul>
<h3>2.4.10: Nov 10 2001</h3>
<ul>
<li>URI escaping fix (Joel Young)</li>
<li>added xmlGetNodePath() (for paths or XPointers generation)</li>
<li>Fixes namespace handling problems when using DTD and validation</li>
<li>improvements on xmllint: Morus Walter patches for --format and
--encode, Stefan Kost and Heiko Rupp improvements on the --shell</li>
<li>fixes for xmlcatalog linking pointed by Weiqi Gao</li>
<li>fixes to the HTML parser</li>
</ul>
<h3>2.4.9: Nov 6 2001</h3>
<ul>
<li>fixes more catalog bugs</li>
<li>avoid a compilation problem, improve xmlGetLineNo()</li>
</ul>
<h3>2.4.8: Nov 4 2001</h3>
<ul>
<li>fixed SGML catalogs broken in previous release, updated xmlcatalog
tool</li>
<li>fixed a compile errors and some includes troubles.</li>
</ul>
<h3>2.4.7: Oct 30 2001</h3>
<ul>
<li>exported some debugging interfaces</li>
<li>serious rewrite of the catalog code</li>
<li>integrated Gary Pennington thread safety patch, added configure option
and regression tests</li>
<li>removed an HTML parser bug</li>
<li>fixed a couple of potentially serious validation bugs</li>
<li>integrated the SGML DocBook support in xmllint</li>
<li>changed the nanoftp anonymous login passwd</li>
<li>some I/O cleanup and a couple of interfaces for Perl wrapper</li>
<li>general bug fixes</li>
<li>updated xmllint man page by John Fleck</li>
<li>some VMS and Windows updates</li>
</ul>
<h3>2.4.6: Oct 10 2001</h3>
<ul>
<li>added an updated man pages by John Fleck</li>
<li>portability and configure fixes</li>
<li>an infinite loop on the HTML parser was removed (William)</li>
<li>Windows makefile patches from Igor</li>
<li>fixed half a dozen bugs reported for libxml or libxslt</li>
<li>updated xmlcatalog to be able to modify SGML super catalogs</li>
</ul>
<h3>2.4.5: Sep 14 2001</h3>
<ul>
<li>Remove a few annoying bugs in 2.4.4</li>
<li>forces the HTML serializer to output decimal charrefs since some
version of Netscape can't handle hexadecimal ones</li>
</ul>
<h3>1.8.16: Sep 14 2001</h3>
<ul>
<li>maintenance release of the old libxml1 branch, couple of bug and
portability fixes</li>
</ul>
<h3>2.4.4: Sep 12 2001</h3>
<ul>
<li>added --convert to xmlcatalog, bug fixes and cleanups of XML
Catalog</li>
<li>a few bug fixes and some portability changes</li>
<li>some documentation cleanups</li>
</ul>
<h3>2.4.3: Aug 23 2001</h3>
<ul>
<li>XML Catalog support see the doc</li>
<li>New NaN/Infinity floating point code</li>
<li>A few bug fixes</li>
</ul>
<h3>2.4.2: Aug 15 2001</h3>
<ul>
<li>adds xmlLineNumbersDefault() to control line number generation</li>
<li>lot of bug fixes</li>
<li>the Microsoft MSC projects files should now be up to date</li>
<li>inheritance of namespaces from DTD defaulted attributes</li>
<li>fixes a serious potential security bug</li>
<li>added a --format option to xmllint</li>
</ul>
<h3>2.4.1: July 24 2001</h3>
<ul>
<li>possibility to keep line numbers in the tree</li>
<li>some computation NaN fixes</li>
<li>extension of the XPath API</li>
<li>cleanup for alpha and ia64 targets</li>
<li>patch to allow saving through HTTP PUT or POST</li>
</ul>
<h3>2.4.0: July 10 2001</h3>
<ul>
<li>Fixed a few bugs in XPath, validation, and tree handling.</li>
<li>Fixed XML Base implementation, added a couple of examples to the
regression tests</li>
<li>A bit of cleanup</li>
</ul>
<h3>2.3.14: July 5 2001</h3>
<ul>
<li>fixed some entities problems and reduce memory requirement when
substituting them</li>
<li>lots of improvements in the XPath queries interpreter can be
substantially faster</li>
<li>Makefiles and configure cleanups</li>
<li>Fixes to XPath variable eval, and compare on empty node set</li>
<li>HTML tag closing bug fixed</li>
<li>Fixed an URI reference computation problem when validating</li>
</ul>
<h3>2.3.13: June 28 2001</h3>
<ul>
<li>2.3.12 configure.in was broken as well as the push mode XML parser</li>
<li>a few more fixes for compilation on Windows MSC by Yon Derek</li>
</ul>
<h3>1.8.14: June 28 2001</h3>
<ul>
<li>Zbigniew Chyla gave a patch to use the old XML parser in push mode</li>
<li>Small Makefile fix</li>
</ul>
<h3>2.3.12: June 26 2001</h3>
<ul>
<li>lots of cleanup</li>
<li>a couple of validation fix</li>
<li>fixed line number counting</li>
<li>fixed serious problems in the XInclude processing</li>
<li>added support for UTF8 BOM at beginning of entities</li>
<li>fixed a strange gcc optimizer bugs in xpath handling of float, gcc-3.0
miscompile uri.c (William), Thomas Leitner provided a fix for the
optimizer on Tru64</li>
<li>incorporated Yon Derek and Igor Zlatkovic fixes and improvements for
compilation on Windows MSC</li>
<li>update of libxml-doc.el (Felix Natter)</li>
<li>fixed 2 bugs in URI normalization code</li>
</ul>
<h3>2.3.11: June 17 2001</h3>
<ul>
<li>updates to trio, Makefiles and configure should fix some portability
problems (alpha)</li>
<li>fixed some HTML serialization problems (pre, script, and block/inline
handling), added encoding aware APIs, cleanup of this code</li>
<li>added xmlHasNsProp()</li>
<li>implemented a specific PI for encoding support in the DocBook SGML
parser</li>
<li>some XPath fixes (-Infinity, / as a function parameter and namespaces
node selection)</li>
<li>fixed a performance problem and an error in the validation code</li>
<li>fixed XInclude routine to implement the recursive behaviour</li>
<li>fixed xmlFreeNode problem when libxml is included statically twice</li>
<li>added --version to xmllint for bug reports</li>
</ul>
<h3>2.3.10: June 1 2001</h3>
<ul>
<li>fixed the SGML catalog support</li>
<li>a number of reported bugs got fixed, in XPath, iconv detection,
XInclude processing</li>
<li>XPath string function should now handle unicode correctly</li>
</ul>
<h3>2.3.9: May 19 2001</h3>
<p>Lots of bugfixes, and added a basic SGML catalog support:</p>
<ul>
<li>HTML push bugfix #54891 and another patch from Jonas Borgström</li>
<li>some serious speed optimization again</li>
<li>some documentation cleanups</li>
<li>trying to get better linking on Solaris (-R)</li>
<li>XPath API cleanup from Thomas Broyer</li>
<li>Validation bug fixed #54631, added a patch from Gary Pennington, fixed
xmlValidGetValidElements()</li>
<li>Added an INSTALL file</li>
<li>Attribute removal added to API: #54433</li>
<li>added a basic support for SGML catalogs</li>
<li>fixed xmlKeepBlanksDefault(0) API</li>
<li>bugfix in xmlNodeGetLang()</li>
<li>fixed a small configure portability problem</li>
<li>fixed an inversion of SYSTEM and PUBLIC identifier in HTML document</li>
</ul>
<h3>1.8.13: May 14 2001</h3>
<ul>
<li>bugfixes release of the old libxml1 branch used by Gnome</li>
</ul>
<h3>2.3.8: May 3 2001</h3>
<ul>
<li>Integrated an SGML DocBook parser for the Gnome project</li>
<li>Fixed a few things in the HTML parser</li>
<li>Fixed some XPath bugs raised by XSLT use, tried to fix the floating
point portability issue</li>
<li>Speed improvement (8M/s for SAX, 3M/s for DOM, 1.5M/s for
DOM+validation using the XML REC as input and a 700MHz celeron).</li>
<li>incorporated more Windows cleanup</li>
<li>added xmlSaveFormatFile()</li>
<li>fixed problems in copying nodes with entities references (gdome)</li>
<li>removed some troubles surrounding the new validation module</li>
</ul>
<h3>2.3.7: April 22 2001</h3>
<ul>
<li>lots of small bug fixes, corrected XPointer</li>
<li>Non deterministic content model validation support</li>
<li>added xmlDocCopyNode for gdome2</li>
<li>revamped the way the HTML parser handles end of tags</li>
<li>XPath: corrections of namespaces support and number formatting</li>
<li>Windows: Igor Zlatkovic patches for MSC compilation</li>
<li>HTML output fixes from P C Chow and William M. Brack</li>
<li>Improved validation speed sensible for DocBook</li>
<li>fixed a big bug with ID declared in external parsed entities</li>
<li>portability fixes, update of Trio from Bjorn Reese</li>
</ul>
<h3>2.3.6: April 8 2001</h3>
<ul>
<li>Code cleanup using extreme gcc compiler warning options, found and
cleared half a dozen potential problem</li>
<li>the Eazel team found an XML parser bug</li>
<li>cleaned up the user of some of the string formatting function. used the
trio library code to provide the one needed when the platform is missing
them</li>
<li>xpath: removed a memory leak and fixed the predicate evaluation
problem, extended the testsuite and cleaned up the result. XPointer seems
broken ...</li>
</ul>
<h3>2.3.5: Mar 23 2001</h3>
<ul>
<li>Biggest change is separate parsing and evaluation of XPath expressions,
there is some new APIs for this too</li>
<li>included a number of bug fixes(XML push parser, 51876, notations,
52299)</li>
<li>Fixed some portability issues</li>
</ul>
<h3>2.3.4: Mar 10 2001</h3>
<ul>
<li>Fixed bugs #51860 and #51861</li>
<li>Added a global variable xmlDefaultBufferSize to allow default buffer
size to be application tunable.</li>
<li>Some cleanup in the validation code, still a bug left and this part
should probably be rewritten to support ambiguous content model :-\</li>
<li>Fix a couple of serious bugs introduced or raised by changes in 2.3.3
parser</li>
<li>Fixed another bug in xmlNodeGetContent()</li>
<li>Bjorn fixed XPath node collection and Number formatting</li>
<li>Fixed a loop reported in the HTML parsing</li>
<li>blank space are reported even if the Dtd content model proves that they
are formatting spaces, this is for XML conformance</li>
</ul>
<h3>2.3.3: Mar 1 2001</h3>
<ul>
<li>small change in XPath for XSLT</li>
<li>documentation cleanups</li>
<li>fix in validation by Gary Pennington</li>
<li>serious parsing performances improvements</li>
</ul>
<h3>2.3.2: Feb 24 2001</h3>
<ul>
<li>chasing XPath bugs, found a bunch, completed some TODO</li>
<li>fixed a Dtd parsing bug</li>
<li>fixed a bug in xmlNodeGetContent</li>
<li>ID/IDREF support partly rewritten by Gary Pennington</li>
</ul>
<h3>2.3.1: Feb 15 2001</h3>
<ul>
<li>some XPath and HTML bug fixes for XSLT</li>
<li>small extension of the hash table interfaces for DOM gdome2
implementation</li>
<li>A few bug fixes</li>
</ul>
<h3>2.3.0: Feb 8 2001 (2.2.12 was on 25 Jan but I didn't kept track)</h3>
<ul>
<li>Lots of XPath bug fixes</li>
<li>Add a mode with Dtd lookup but without validation error reporting for
XSLT</li>
<li>Add support for text node without escaping (XSLT)</li>
<li>bug fixes for xmlCheckFilename</li>
<li>validation code bug fixes from Gary Pennington</li>
<li>Patch from Paul D. Smith correcting URI path normalization</li>
<li>Patch to allow simultaneous install of libxml-devel and
libxml2-devel</li>
<li>the example Makefile is now fixed</li>
<li>added HTML to the RPM packages</li>
<li>tree copying bugfixes</li>
<li>updates to Windows makefiles</li>
<li>optimization patch from Bjorn Reese</li>
</ul>
<h3>2.2.11: Jan 4 2001</h3>
<ul>
<li>bunch of bug fixes (memory I/O, xpath, ftp/http, ...)</li>
<li>added htmlHandleOmittedElem()</li>
<li>Applied Bjorn Reese's IPV6 first patch</li>
<li>Applied Paul D. Smith patches for validation of XInclude results</li>
<li>added XPointer xmlns() new scheme support</li>
</ul>
<h3>2.2.10: Nov 25 2000</h3>
<ul>
<li>Fix the Windows problems of 2.2.8</li>
<li>integrate OpenVMS patches</li>
<li>better handling of some nasty HTML input</li>
<li>Improved the XPointer implementation</li>
<li>integrate a number of provided patches</li>
</ul>
<h3>2.2.9: Nov 25 2000</h3>
<ul>
<li>erroneous release :-(</li>
</ul>
<h3>2.2.8: Nov 13 2000</h3>
<ul>
<li>First version of <a href="http://www.w3.org/TR/xinclude">XInclude</a>
support</li>
<li>Patch in conditional section handling</li>
<li>updated MS compiler project</li>
<li>fixed some XPath problems</li>
<li>added an URI escaping function</li>
<li>some other bug fixes</li>
</ul>
<h3>2.2.7: Oct 31 2000</h3>
<ul>
<li>added message redirection</li>
<li>XPath improvements (thanks TOM !)</li>
<li>xmlIOParseDTD() added</li>
<li>various small fixes in the HTML, URI, HTTP and XPointer support</li>
<li>some cleanup of the Makefile, autoconf and the distribution content</li>
</ul>
<h3>2.2.6: Oct 25 2000:</h3>
<ul>
<li>Added an hash table module, migrated a number of internal structure to
those</li>
<li>Fixed a posteriori validation problems</li>
<li>HTTP module cleanups</li>
<li>HTML parser improvements (tag errors, script/style handling, attribute
normalization)</li>
<li>coalescing of adjacent text nodes</li>
<li>couple of XPath bug fixes, exported the internal API</li>
</ul>
<h3>2.2.5: Oct 15 2000:</h3>
<ul>
<li>XPointer implementation and testsuite</li>
<li>Lot of XPath fixes, added variable and functions registration, more
tests</li>
<li>Portability fixes, lots of enhancements toward an easy Windows build
and release</li>
<li>Late validation fixes</li>
<li>Integrated a lot of contributed patches</li>
<li>added memory management docs</li>
<li>a performance problem when using large buffer seems fixed</li>
</ul>
<h3>2.2.4: Oct 1 2000:</h3>
<ul>
<li>main XPath problem fixed</li>
<li>Integrated portability patches for Windows</li>
<li>Serious bug fixes on the URI and HTML code</li>
</ul>
<h3>2.2.3: Sep 17 2000</h3>
<ul>
<li>bug fixes</li>
<li>cleanup of entity handling code</li>
<li>overall review of all loops in the parsers, all sprintf usage has been
checked too</li>
<li>Far better handling of larges Dtd. Validating against DocBook XML Dtd
works smoothly now.</li>
</ul>
<h3>1.8.10: Sep 6 2000</h3>
<ul>
<li>bug fix release for some Gnome projects</li>
</ul>
<h3>2.2.2: August 12 2000</h3>
<ul>
<li>mostly bug fixes</li>
<li>started adding routines to access xml parser context options</li>
</ul>
<h3>2.2.1: July 21 2000</h3>
<ul>
<li>a purely bug fixes release</li>
<li>fixed an encoding support problem when parsing from a memory block</li>
<li>fixed a DOCTYPE parsing problem</li>
<li>removed a bug in the function allowing to override the memory
allocation routines</li>
</ul>
<h3>2.2.0: July 14 2000</h3>
<ul>
<li>applied a lot of portability fixes</li>
<li>better encoding support/cleanup and saving (content is now always
encoded in UTF-8)</li>
<li>the HTML parser now correctly handles encodings</li>
<li>added xmlHasProp()</li>
<li>fixed a serious problem with &amp;#38;</li>
<li>propagated the fix to FTP client</li>
<li>cleanup, bugfixes, etc ...</li>
<li>Added a page about <a href="encoding.html">libxml Internationalization
support</a></li>
</ul>
<h3>1.8.9: July 9 2000</h3>
<ul>
<li>fixed the spec the RPMs should be better</li>
<li>fixed a serious bug in the FTP implementation, released 1.8.9 to solve
rpmfind users problem</li>
</ul>
<h3>2.1.1: July 1 2000</h3>
<ul>
<li>fixes a couple of bugs in the 2.1.0 packaging</li>
<li>improvements on the HTML parser</li>
</ul>
<h3>2.1.0 and 1.8.8: June 29 2000</h3>
<ul>
<li>1.8.8 is mostly a commodity package for upgrading to libxml2 according
to <a href="upgrade.html">new instructions</a>. It fixes a nasty problem
about &amp;#38; charref parsing</li>
<li>2.1.0 also ease the upgrade from libxml v1 to the recent version. it
also contains numerous fixes and enhancements:
<ul>
<li>added xmlStopParser() to stop parsing</li>
<li>improved a lot parsing speed when there is large CDATA blocs</li>
<li>includes XPath patches provided by Picdar Technology</li>
<li>tried to fix as much as possible DTD validation and namespace
related problems</li>
<li>output to a given encoding has been added/tested</li>
<li>lot of various fixes</li>
</ul>
</li>
</ul>
<h3>2.0.0: Apr 12 2000</h3>
<ul>
<li>First public release of libxml2. If you are using libxml, it's a good
idea to check the 1.x to 2.x upgrade instructions. NOTE: while initially
scheduled for Apr 3 the release occurred only on Apr 12 due to massive
workload.</li>
<li>The include are now located under $prefix/include/libxml (instead of
$prefix/include/gnome-xml), they also are referenced by
<pre>#include &lt;libxml/xxx.h&gt;</pre>
<p>instead of</p>
<pre>#include "xxx.h"</pre>
</li>
<li>a new URI module for parsing URIs and following strictly RFC 2396</li>
<li>the memory allocation routines used by libxml can now be overloaded
dynamically by using xmlMemSetup()</li>
<li>The previously CVS only tool tester has been renamed
<strong>xmllint</strong> and is now installed as part of the libxml2
package</li>
<li>The I/O interface has been revamped. There is now ways to plug in
specific I/O modules, either at the URI scheme detection level using
xmlRegisterInputCallbacks() or by passing I/O functions when creating a
parser context using xmlCreateIOParserCtxt()</li>
<li>there is a C preprocessor macro LIBXML_VERSION providing the version
number of the libxml module in use</li>
<li>a number of optional features of libxml can now be excluded at
configure time (FTP/HTTP/HTML/XPath/Debug)</li>
</ul>
<h3>2.0.0beta: Mar 14 2000</h3>
<ul>
<li>This is a first Beta release of libxml version 2</li>
<li>It's available only from<a href="ftp://xmlsoft.org/libxml2/">xmlsoft.org
FTP</a>, it's packaged as libxml2-2.0.0beta and available as tar and
RPMs</li>
<li>This version is now the head in the Gnome CVS base, the old one is
available under the tag LIB_XML_1_X</li>
<li>This includes a very large set of changes. From a programmatic point
of view applications should not have to be modified too much, check the
<a href="upgrade.html">upgrade page</a></li>
<li>Some interfaces may changes (especially a bit about encoding).</li>
<li>the updates includes:
<ul>
<li>fix I18N support. ISO-Latin-x/UTF-8/UTF-16 (nearly) seems correctly
handled now</li>
<li>Better handling of entities, especially well-formedness checking
and proper PEref extensions in external subsets</li>
<li>DTD conditional sections</li>
<li>Validation now correctly handle entities content</li>
<li><a href="http://rpmfind.net/tools/gdome/messages/0039.html">change
structures to accommodate DOM</a></li>
</ul>
</li>
<li>Serious progress were made toward compliance, <a
href="conf/result.html">here are the result of the test</a> against the
OASIS testsuite (except the Japanese tests since I don't support that
encoding yet). This URL is rebuilt every couple of hours using the CVS
head version.</li>
</ul>
<h3>1.8.7: Mar 6 2000</h3>
<ul>
<li>This is a bug fix release:</li>
<li>It is possible to disable the ignorable blanks heuristic used by
libxml-1.x, a new function xmlKeepBlanksDefault(0) will allow this. Note
that for adherence to XML spec, this behaviour will be disabled by
default in 2.x . The same function will allow to keep compatibility for
old code.</li>
<li>Blanks in &lt;a&gt; &lt;/a&gt; constructs are not ignored anymore,
avoiding heuristic is really the Right Way :-\</li>
<li>The unchecked use of snprintf which was breaking libxml-1.8.6
compilation on some platforms has been fixed</li>
<li>nanoftp.c nanohttp.c: Fixed '#' and '?' stripping when processing
URIs</li>
</ul>
<h3>1.8.6: Jan 31 2000</h3>
<ul>
<li>added a nanoFTP transport module, debugged until the new version of <a
href="http://rpmfind.net/linux/rpm2html/rpmfind.html">rpmfind</a> can use
it without troubles</li>
</ul>
<h3>1.8.5: Jan 21 2000</h3>
<ul>
<li>adding APIs to parse a well balanced chunk of XML (production <a
href="http://www.w3.org/TR/REC-xml#NT-content">[43] content</a> of the
XML spec)</li>
<li>fixed a hideous bug in xmlGetProp pointed by Rune.Djurhuus@fast.no</li>
<li>Jody Goldberg &lt;jgoldberg@home.com&gt; provided another patch trying
to solve the zlib checks problems</li>
<li>The current state in gnome CVS base is expected to ship as 1.8.5 with
gnumeric soon</li>
</ul>
<h3>1.8.4: Jan 13 2000</h3>
<ul>
<li>bug fixes, reintroduced xmlNewGlobalNs(), fixed xmlNewNs()</li>
<li>all exit() call should have been removed from libxml</li>
<li>fixed a problem with INCLUDE_WINSOCK on WIN32 platform</li>
<li>added newDocFragment()</li>
</ul>
<h3>1.8.3: Jan 5 2000</h3>
<ul>
<li>a Push interface for the XML and HTML parsers</li>
<li>a shell-like interface to the document tree (try tester --shell :-)</li>
<li>lots of bug fixes and improvement added over XMas holidays</li>
<li>fixed the DTD parsing code to work with the xhtml DTD</li>
<li>added xmlRemoveProp(), xmlRemoveID() and xmlRemoveRef()</li>
<li>Fixed bugs in xmlNewNs()</li>
<li>External entity loading code has been revamped, now it uses
xmlLoadExternalEntity(), some fix on entities processing were added</li>
<li>cleaned up WIN32 includes of socket stuff</li>
</ul>
<h3>1.8.2: Dec 21 1999</h3>
<ul>
<li>I got another problem with includes and C++, I hope this issue is fixed
for good this time</li>
<li>Added a few tree modification functions: xmlReplaceNode,
xmlAddPrevSibling, xmlAddNextSibling, xmlNodeSetName and
xmlDocSetRootElement</li>
<li>Tried to improve the HTML output with help from <a
href="mailto:clahey@umich.edu">Chris Lahey</a></li>
</ul>
<h3>1.8.1: Dec 18 1999</h3>
<ul>
<li>various patches to avoid troubles when using libxml with C++ compilers
the "namespace" keyword and C escaping in include files</li>
<li>a problem in one of the core macros IS_CHAR was corrected</li>
<li>fixed a bug introduced in 1.8.0 breaking default namespace processing,
and more specifically the Dia application</li>
<li>fixed a posteriori validation (validation after parsing, or by using a
Dtd not specified in the original document)</li>
<li>fixed a bug in</li>
</ul>
<h3>1.8.0: Dec 12 1999</h3>
<ul>
<li>cleanup, especially memory wise</li>
<li>the parser should be more reliable, especially the HTML one, it should
not crash, whatever the input !</li>
<li>Integrated various patches, especially a speedup improvement for large
dataset from <a href="mailto:cnygard@bellatlantic.net">Carl Nygard</a>,
configure with --with-buffers to enable them.</li>
<li>attribute normalization, oops should have been added long ago !</li>
<li>attributes defaulted from DTDs should be available, xmlSetProp() now
does entities escaping by default.</li>
</ul>
<h3>1.7.4: Oct 25 1999</h3>
<ul>
<li>Lots of HTML improvement</li>
<li>Fixed some errors when saving both XML and HTML</li>
<li>More examples, the regression tests should now look clean</li>
<li>Fixed a bug with contiguous charref</li>
</ul>
<h3>1.7.3: Sep 29 1999</h3>
<ul>
<li>portability problems fixed</li>
<li>snprintf was used unconditionally, leading to link problems on system
were it's not available, fixed</li>
</ul>
<h3>1.7.1: Sep 24 1999</h3>
<ul>
<li>The basic type for strings manipulated by libxml has been renamed in
1.7.1 from <strong>CHAR</strong> to <strong>xmlChar</strong>. The reason
is that CHAR was conflicting with a predefined type on Windows. However
on non WIN32 environment, compatibility is provided by the way of a
<strong>#define </strong>.</li>
<li>Changed another error : the use of a structure field called errno, and
leading to troubles on platforms where it's a macro</li>
</ul>
<h3>1.7.0: Sep 23 1999</h3>
<ul>
<li>Added the ability to fetch remote DTD or parsed entities, see the <a
href="html/libxml-nanohttp.html">nanohttp</a> module.</li>
<li>Added an errno to report errors by another mean than a simple printf
like callback</li>
<li>Finished ID/IDREF support and checking when validation</li>
<li>Serious memory leaks fixed (there is now a <a
href="html/libxml-xmlmemory.html">memory wrapper</a> module)</li>
<li>Improvement of <a href="http://www.w3.org/TR/xpath">XPath</a>
implementation</li>
<li>Added an HTML parser front-end</li>
</ul>
<h2><a name="XML">XML</a></h2>
<p><a href="http://www.w3.org/TR/REC-xml">XML is a standard</a> for
markup-based structured documents. Here is <a name="example">an example XML
document</a>:</p>
<pre>&lt;?xml version="1.0"?&gt;
&lt;EXAMPLE prop1="gnome is great" prop2="&amp;amp; linux too"&gt;
&lt;head&gt;
&lt;title&gt;Welcome to Gnome&lt;/title&gt;
&lt;/head&gt;
&lt;chapter&gt;
&lt;title&gt;The Linux adventure&lt;/title&gt;
&lt;p&gt;bla bla bla ...&lt;/p&gt;
&lt;image href="linus.gif"/&gt;
&lt;p&gt;...&lt;/p&gt;
&lt;/chapter&gt;
&lt;/EXAMPLE&gt;</pre>
<p>The first line specifies that it is an XML document and gives useful
information about its encoding. Then the rest of the document is a text
format whose structure is specified by tags between brackets. <strong>Each
tag opened has to be closed</strong>. XML is pedantic about this. However, if
a tag is empty (no content), a single tag can serve as both the opening and
closing tag if it ends with <code>/&gt;</code> rather than with
<code>&gt;</code>. Note that, for example, the image tag has no content (just
an attribute) and is closed by ending the tag with <code>/&gt;</code>.</p>
<p>XML can be applied successfully to a wide range of tasks, ranging from
long term structured document maintenance (where it follows the steps of
SGML) to simple data encoding mechanisms like configuration file formatting
(glade), spreadsheets (gnumeric), or even shorter lived documents such as
WebDAV where it is used to encode remote calls between a client and a
server.</p>
<h2><a name="XSLT">XSLT</a></h2>
<p>Check <a href="http://xmlsoft.org/XSLT">the separate libxslt page</a></p>
<p><a href="http://www.w3.org/TR/xslt">XSL Transformations</a>, is a
language for transforming XML documents into other XML documents (or
HTML/textual output).</p>
<p>A separate library called libxslt is available implementing XSLT-1.0 for
libxml2. This module "libxslt" too can be found in the Gnome SVN base.</p>
<p>You can check the progresses on the libxslt <a
href="http://xmlsoft.org/XSLT/ChangeLog.html">Changelog</a>.</p>
<h2><a name="Python">Python and bindings</a></h2>
<p>There are a number of language bindings and wrappers available for
libxml2, the list below is not exhaustive. Please contact the <a
href="http://mail.gnome.org/mailman/listinfo/xml-bindings">xml-bindings@gnome.org</a>
(<a href="http://mail.gnome.org/archives/xml-bindings/">archives</a>) in
order to get updates to this list or to discuss the specific topic of libxml2
or libxslt wrappers or bindings:</p>
<ul>
<li><a href="http://libxmlplusplus.sourceforge.net/">Libxml++</a> seems the
most up-to-date C++ bindings for libxml2, check the <a
href="http://libxmlplusplus.sourceforge.net/reference/html/hierarchy.html">documentation</a>
and the <a
href="http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/libxmlplusplus/libxml%2b%2b/examples/">examples</a>.</li>
<li>There is another <a href="http://libgdome-cpp.berlios.de/">C++ wrapper
based on the gdome2 bindings</a> maintained by Tobias Peters.</li>
<li>and a third C++ wrapper by Peter Jones &lt;pjones@pmade.org&gt;
<p>Website: <a
href="http://pmade.org/pjones/software/xmlwrapp/">http://pmade.org/pjones/software/xmlwrapp/</a></p>
</li>
<li>XML::LibXML <a href="http://cpan.uwinnipeg.ca/dist/XML-LibXML">Perl
bindings</a> are available on CPAN, as well as XML::LibXSLT
<a href="http://cpan.uwinnipeg.ca/dist/XML-LibXSLT">Perl libxslt
bindings</a>.</li>
<li>If you're interested into scripting XML processing, have a look at <a
href="http://xsh.sourceforge.net/">XSH</a> an XML editing shell based on
Libxml2 Perl bindings.</li>
<li><a href="mailto:dkuhlman@cutter.rexx.com">Dave Kuhlman</a> provides an
earlier version of the libxml/libxslt <a
href="http://www.rexx.com/~dkuhlman">wrappers for Python</a>.</li>
<li>Gopal.V and Peter Minten develop <a
href="http://savannah.gnu.org/projects/libxmlsharp">libxml#</a>, a set of
C# libxml2 bindings.</li>
<li>Petr Kozelka provides <a
href="http://sourceforge.net/projects/libxml2-pas">Pascal units to glue
libxml2</a> with Kylix, Delphi and other Pascal compilers.</li>
<li>Uwe Fechner also provides <a
href="http://sourceforge.net/projects/idom2-pas/">idom2</a>, a DOM2
implementation for Kylix2/D5/D6 from Borland.</li>
<li>There is <a href="http://libxml.rubyforge.org/">bindings for Ruby</a>
and libxml2 bindings are also available in Ruby through the <a
href="http://libgdome-ruby.berlios.de/">libgdome-ruby</a> module
maintained by Tobias Peters.</li>
<li>Steve Ball and contributors maintains <a
href="http://tclxml.sourceforge.net/">libxml2 and libxslt bindings for
Tcl</a>.</li>
<li>libxml2 and libxslt are the default XML libraries for PHP5.</li>
<li><a href="http://savannah.gnu.org/projects/classpathx/">LibxmlJ</a> is
an effort to create a 100% JAXP-compatible Java wrapper for libxml2 and
libxslt as part of GNU ClasspathX project.</li>
<li>Patrick McPhee provides Rexx bindings fof libxml2 and libxslt, look for
<a href="http://www.interlog.com/~ptjm/software.html">RexxXML</a>.</li>
<li><a
href="http://www.satimage.fr/software/en/xml_suite.html">Satimage</a>
provides <a
href="http://www.satimage.fr/software/en/downloads_osaxen.html">XMLLib
osax</a>. This is an osax for Mac OS X with a set of commands to
implement in AppleScript the XML DOM, XPATH and XSLT. Also includes
commands for Property-lists (Apple's fast lookup table XML format.)</li>
<li>Francesco Montorsi developped <a
href="https://sourceforge.net/project/showfiles.php?group_id=51305&amp;package_id=45182">wxXml2</a>
wrappers that interface libxml2, allowing wxWidgets applications to
load/save/edit XML instances.</li>
</ul>
<p>The distribution includes a set of Python bindings, which are guaranteed
to be maintained as part of the library in the future, though the Python
interface have not yet reached the completeness of the C API.</p>
<p>Note that some of the Python purist dislike the default set of Python
bindings, rather than complaining I suggest they have a look at <a
href="http://codespeak.net/lxml/">lxml the more pythonic bindings for libxml2
and libxslt</a> and <a
href="http://codespeak.net/mailman/listinfo/lxml-dev">help Martijn
Faassen</a> complete those.</p>
<p><a href="mailto:stephane.bidoul@softwareag.com">Stéphane Bidoul</a>
maintains <a href="http://users.skynet.be/sbi/libxml-python/">a Windows port
of the Python bindings</a>.</p>
<p>Note to people interested in building bindings, the API is formalized as
<a href="libxml2-api.xml">an XML API description file</a> which allows to
automate a large part of the Python bindings, this includes function
descriptions, enums, structures, typedefs, etc... The Python script used to
build the bindings is python/generator.py in the source distribution.</p>
<p>To install the Python bindings there are 2 options:</p>
<ul>
<li>If you use an RPM based distribution, simply install the <a
href="http://rpmfind.net/linux/rpm2html/search.php?query=libxml2-python">libxml2-python
RPM</a> (and if needed the <a
href="http://rpmfind.net/linux/rpm2html/search.php?query=libxslt-python">libxslt-python
RPM</a>).</li>
<li>Otherwise use the <a href="ftp://xmlsoft.org/libxml2/python/">libxml2-python
module distribution</a> corresponding to your installed version of
libxml2 and libxslt. Note that to install it you will need both libxml2
and libxslt installed and run "python setup.py build install" in the
module tree.</li>
</ul>
<p>The distribution includes a set of examples and regression tests for the
python bindings in the <code>python/tests</code> directory. Here are some
excerpts from those tests:</p>
<h3>tst.py:</h3>
<p>This is a basic test of the file interface and DOM navigation:</p>
<pre>import libxml2, sys
doc = libxml2.parseFile("tst.xml")
if doc.name != "tst.xml":
print "doc.name failed"
sys.exit(1)
root = doc.children
if root.name != "doc":
print "root.name failed"
sys.exit(1)
child = root.children
if child.name != "foo":
print "child.name failed"
sys.exit(1)
doc.freeDoc()</pre>
<p>The Python module is called libxml2; parseFile is the equivalent of
xmlParseFile (most of the bindings are automatically generated, and the xml
prefix is removed and the casing convention are kept). All node seen at the
binding level share the same subset of accessors:</p>
<ul>
<li><code>name</code> : returns the node name</li>
<li><code>type</code> : returns a string indicating the node type</li>
<li><code>content</code> : returns the content of the node, it is based on
xmlNodeGetContent() and hence is recursive.</li>
<li><code>parent</code> , <code>children</code>, <code>last</code>,
<code>next</code>, <code>prev</code>, <code>doc</code>,
<code>properties</code>: pointing to the associated element in the tree,
those may return None in case no such link exists.</li>
</ul>
<p>Also note the need to explicitly deallocate documents with freeDoc() .
Reference counting for libxml2 trees would need quite a lot of work to
function properly, and rather than risk memory leaks if not implemented
correctly it sounds safer to have an explicit function to free a tree. The
wrapper python objects like doc, root or child are them automatically garbage
collected.</p>
<h3>validate.py:</h3>
<p>This test check the validation interfaces and redirection of error
messages:</p>
<pre>import libxml2
#deactivate error messages from the validation
def noerr(ctx, str):
pass
libxml2.registerErrorHandler(noerr, None)
ctxt = libxml2.createFileParserCtxt("invalid.xml")
ctxt.validate(1)
ctxt.parseDocument()
doc = ctxt.doc()
valid = ctxt.isValid()
doc.freeDoc()
if valid != 0:
print "validity check failed"</pre>
<p>The first thing to notice is the call to registerErrorHandler(), it
defines a new error handler global to the library. It is used to avoid seeing
the error messages when trying to validate the invalid document.</p>
<p>The main interest of that test is the creation of a parser context with
createFileParserCtxt() and how the behaviour can be changed before calling
parseDocument() . Similarly the information resulting from the parsing phase
is also available using context methods.</p>
<p>Contexts like nodes are defined as class and the libxml2 wrappers maps the
C function interfaces in terms of objects method as much as possible. The
best to get a complete view of what methods are supported is to look at the
libxml2.py module containing all the wrappers.</p>
<h3>push.py:</h3>
<p>This test show how to activate the push parser interface:</p>
<pre>import libxml2
ctxt = libxml2.createPushParser(None, "&lt;foo", 4, "test.xml")
ctxt.parseChunk("/&gt;", 2, 1)
doc = ctxt.doc()
doc.freeDoc()</pre>
<p>The context is created with a special call based on the
xmlCreatePushParser() from the C library. The first argument is an optional
SAX callback object, then the initial set of data, the length and the name of
the resource in case URI-References need to be computed by the parser.</p>
<p>Then the data are pushed using the parseChunk() method, the last call
setting the third argument terminate to 1.</p>
<h3>pushSAX.py:</h3>
<p>this test show the use of the event based parsing interfaces. In this case
the parser does not build a document, but provides callback information as
the parser makes progresses analyzing the data being provided:</p>
<pre>import libxml2
log = ""
class callback:
def startDocument(self):
global log
log = log + "startDocument:"
def endDocument(self):
global log
log = log + "endDocument:"
def startElement(self, tag, attrs):
global log
log = log + "startElement %s %s:" % (tag, attrs)
def endElement(self, tag):
global log
log = log + "endElement %s:" % (tag)
def characters(self, data):
global log
log = log + "characters: %s:" % (data)
def warning(self, msg):
global log
log = log + "warning: %s:" % (msg)
def error(self, msg):
global log
log = log + "error: %s:" % (msg)
def fatalError(self, msg):
global log
log = log + "fatalError: %s:" % (msg)
handler = callback()
ctxt = libxml2.createPushParser(handler, "&lt;foo", 4, "test.xml")
chunk = " url='tst'&gt;b"
ctxt.parseChunk(chunk, len(chunk), 0)
chunk = "ar&lt;/foo&gt;"
ctxt.parseChunk(chunk, len(chunk), 1)
reference = "startDocument:startElement foo {'url': 'tst'}:" + \
"characters: bar:endElement foo:endDocument:"
if log != reference:
print "Error got: %s" % log
print "Expected: %s" % reference</pre>
<p>The key object in that test is the handler, it provides a number of entry
points which can be called by the parser as it makes progresses to indicate
the information set obtained. The full set of callback is larger than what
the callback class in that specific example implements (see the SAX
definition for a complete list). The wrapper will only call those supplied by
the object when activated. The startElement receives the names of the element
and a dictionary containing the attributes carried by this element.</p>
<p>Also note that the reference string generated from the callback shows a
single character call even though the string "bar" is passed to the parser
from 2 different call to parseChunk()</p>
<h3>xpath.py:</h3>
<p>This is a basic test of XPath wrappers support</p>
<pre>import libxml2
doc = libxml2.parseFile("tst.xml")
ctxt = doc.xpathNewContext()
res = ctxt.xpathEval("//*")
if len(res) != 2:
print "xpath query: wrong node set size"
sys.exit(1)
if res[0].name != "doc" or res[1].name != "foo":
print "xpath query: wrong node set value"
sys.exit(1)
doc.freeDoc()
ctxt.xpathFreeContext()</pre>
<p>This test parses a file, then create an XPath context to evaluate XPath
expression on it. The xpathEval() method execute an XPath query and returns
the result mapped in a Python way. String and numbers are natively converted,
and node sets are returned as a tuple of libxml2 Python nodes wrappers. Like
the document, the XPath context need to be freed explicitly, also not that
the result of the XPath query may point back to the document tree and hence
the document must be freed after the result of the query is used.</p>
<h3>xpathext.py:</h3>
<p>This test shows how to extend the XPath engine with functions written in
python:</p>
<pre>import libxml2
def foo(ctx, x):
return x + 1
doc = libxml2.parseFile("tst.xml")
ctxt = doc.xpathNewContext()
libxml2.registerXPathFunction(ctxt._o, "foo", None, foo)
res = ctxt.xpathEval("foo(1)")
if res != 2:
print "xpath extension failure"
doc.freeDoc()
ctxt.xpathFreeContext()</pre>
<p>Note how the extension function is registered with the context (but that
part is not yet finalized, this may change slightly in the future).</p>
<h3>tstxpath.py:</h3>
<p>This test is similar to the previous one but shows how the extension
function can access the XPath evaluation context:</p>
<pre>def foo(ctx, x):
global called
#
# test that access to the XPath evaluation contexts
#
pctxt = libxml2.xpathParserContext(_obj=ctx)
ctxt = pctxt.context()
called = ctxt.function()
return x + 1</pre>
<p>All the interfaces around the XPath parser(or rather evaluation) context
are not finalized, but it should be sufficient to do contextual work at the
evaluation point.</p>
<h3>Memory debugging:</h3>
<p>last but not least, all tests starts with the following prologue:</p>
<pre>#memory debug specific
libxml2.debugMemory(1)</pre>
<p>and ends with the following epilogue:</p>
<pre>#memory debug specific
libxml2.cleanupParser()
if libxml2.debugMemory(1) == 0:
print "OK"
else:
print "Memory leak %d bytes" % (libxml2.debugMemory(1))
libxml2.dumpMemory()</pre>
<p>Those activate the memory debugging interface of libxml2 where all
allocated block in the library are tracked. The prologue then cleans up the
library state and checks that all allocated memory has been freed. If not it
calls dumpMemory() which saves that list in a <code>.memdump</code> file.</p>
<h2><a name="architecture">libxml2 architecture</a></h2>
<p>Libxml2 is made of multiple components; some of them are optional, and
most of the block interfaces are public. The main components are:</p>
<ul>
<li>an Input/Output layer</li>
<li>FTP and HTTP client layers (optional)</li>
<li>an Internationalization layer managing the encodings support</li>
<li>a URI module</li>
<li>the XML parser and its basic SAX interface</li>
<li>an HTML parser using the same SAX interface (optional)</li>
<li>a SAX tree module to build an in-memory DOM representation</li>
<li>a tree module to manipulate the DOM representation</li>
<li>a validation module using the DOM representation (optional)</li>
<li>an XPath module for global lookup in a DOM representation
(optional)</li>
<li>a debug module (optional)</li>
</ul>
<p>Graphically this gives the following:</p>
<p><img src="libxml.gif" alt="a graphical view of the various"></p>
<p></p>
<h2><a name="tree">The tree output</a></h2>
<p>The parser returns a tree built during the document analysis. The value
returned is an <strong>xmlDocPtr</strong> (i.e., a pointer to an
<strong>xmlDoc</strong> structure). This structure contains information such
as the file name, the document type, and a <strong>children</strong> pointer
which is the root of the document (or more exactly the first child under the
root which is the document). The tree is made of <strong>xmlNode</strong>s,
chained in double-linked lists of siblings and with a children&lt;-&gt;parent
relationship. An xmlNode can also carry properties (a chain of xmlAttr
structures). An attribute may have a value which is a list of TEXT or
ENTITY_REF nodes.</p>
<p>Here is an example (erroneous with respect to the XML spec since there
should be only one ELEMENT under the root):</p>
<p><img src="structure.gif" alt=" structure.gif "></p>
<p>In the source package there is a small program (not installed by default)
called <strong>xmllint</strong> which parses XML files given as argument and
prints them back as parsed. This is useful for detecting errors both in XML
code and in the XML parser itself. It has an option <strong>--debug</strong>
which prints the actual in-memory structure of the document; here is the
result with the <a href="#example">example</a> given before:</p>
<pre>DOCUMENT
version=1.0
standalone=true
ELEMENT EXAMPLE
ATTRIBUTE prop1
TEXT
content=gnome is great
ATTRIBUTE prop2
ENTITY_REF
TEXT
content= linux too
ELEMENT head
ELEMENT title
TEXT
content=Welcome to Gnome
ELEMENT chapter
ELEMENT title
TEXT
content=The Linux adventure
ELEMENT p
TEXT
content=bla bla bla ...
ELEMENT image
ATTRIBUTE href
TEXT
content=linus.gif
ELEMENT p
TEXT
content=...</pre>
<p>This should be useful for learning the internal representation model.</p>
<h2><a name="interface">The SAX interface</a></h2>
<p>Sometimes the DOM tree output is just too large to fit reasonably into
memory. In that case (and if you don't expect to save back the XML document
loaded using libxml), it's better to use the SAX interface of libxml. SAX is
a <strong>callback-based interface</strong> to the parser. Before parsing,
the application layer registers a customized set of callbacks which are
called by the library as it progresses through the XML input.</p>
<p>To get more detailed step-by-step guidance on using the SAX interface of
libxml, see the <a
href="http://www.daa.com.au/~james/gnome/xml-sax/xml-sax.html">nice
documentation</a>.written by <a href="mailto:james@daa.com.au">James
Henstridge</a>.</p>
<p>You can debug the SAX behaviour by using the <strong>testSAX</strong>
program located in the gnome-xml module (it's usually not shipped in the
binary packages of libxml, but you can find it in the tar source
distribution). Here is the sequence of callbacks that would be reported by
testSAX when parsing the example XML document shown earlier:</p>
<pre>SAX.setDocumentLocator()
SAX.startDocument()
SAX.getEntity(amp)
SAX.startElement(EXAMPLE, prop1='gnome is great', prop2='&amp;amp; linux too')
SAX.characters( , 3)
SAX.startElement(head)
SAX.characters( , 4)
SAX.startElement(title)
SAX.characters(Welcome to Gnome, 16)
SAX.endElement(title)
SAX.characters( , 3)
SAX.endElement(head)
SAX.characters( , 3)
SAX.startElement(chapter)
SAX.characters( , 4)
SAX.startElement(title)
SAX.characters(The Linux adventure, 19)
SAX.endElement(title)
SAX.characters( , 4)
SAX.startElement(p)
SAX.characters(bla bla bla ..., 15)
SAX.endElement(p)
SAX.characters( , 4)
SAX.startElement(image, href='linus.gif')
SAX.endElement(image)
SAX.characters( , 4)
SAX.startElement(p)
SAX.characters(..., 3)
SAX.endElement(p)
SAX.characters( , 3)
SAX.endElement(chapter)
SAX.characters( , 1)
SAX.endElement(EXAMPLE)
SAX.endDocument()</pre>
<p>Most of the other interfaces of libxml2 are based on the DOM tree-building
facility, so nearly everything up to the end of this document presupposes the
use of the standard DOM tree build. Note that the DOM tree itself is built by
a set of registered default callbacks, without internal specific
interface.</p>
<h2><a name="Validation">Validation &amp; DTDs</a></h2>
<p>Table of Content:</p>
<ol>
<li><a href="#General5">General overview</a></li>
<li><a href="#definition">The definition</a></li>
<li><a href="#Simple">Simple rules</a>
<ol>
<li><a href="#reference">How to reference a DTD from a document</a></li>
<li><a href="#Declaring">Declaring elements</a></li>
<li><a href="#Declaring1">Declaring attributes</a></li>
</ol>
</li>
<li><a href="#Some">Some examples</a></li>
<li><a href="#validate">How to validate</a></li>
<li><a href="#Other">Other resources</a></li>
</ol>
<h3><a name="General5">General overview</a></h3>
<p>Well what is validation and what is a DTD ?</p>
<p>DTD is the acronym for Document Type Definition. This is a description of
the content for a family of XML files. This is part of the XML 1.0
specification, and allows one to describe and verify that a given document
instance conforms to the set of rules detailing its structure and content.</p>
<p>Validation is the process of checking a document against a DTD (more
generally against a set of construction rules).</p>
<p>The validation process and building DTDs are the two most difficult parts
of the XML life cycle. Briefly a DTD defines all the possible elements to be
found within your document, what is the formal shape of your document tree
(by defining the allowed content of an element; either text, a regular
expression for the allowed list of children, or mixed content i.e. both text
and children). The DTD also defines the valid attributes for all elements and
the types of those attributes.</p>
<h3><a name="definition1">The definition</a></h3>
<p>The <a href="http://www.w3.org/TR/REC-xml">W3C XML Recommendation</a> (<a
href="http://www.xml.com/axml/axml.html">Tim Bray's annotated version of
Rev1</a>):</p>
<ul>
<li><a href="http://www.w3.org/TR/REC-xml#elemdecls">Declaring
elements</a></li>
<li><a href="http://www.w3.org/TR/REC-xml#attdecls">Declaring
attributes</a></li>
</ul>
<p>(unfortunately) all this is inherited from the SGML world, the syntax is
ancient...</p>
<h3><a name="Simple1">Simple rules</a></h3>
<p>Writing DTDs can be done in many ways. The rules to build them if you need
something permanent or something which can evolve over time can be radically
different. Really complex DTDs like DocBook ones are flexible but quite
harder to design. I will just focus on DTDs for a formats with a fixed simple
structure. It is just a set of basic rules, and definitely not exhaustive nor
usable for complex DTD design.</p>
<h4><a name="reference1">How to reference a DTD from a document</a>:</h4>
<p>Assuming the top element of the document is <code>spec</code> and the dtd
is placed in the file <code>mydtd</code> in the subdirectory
<code>dtds</code> of the directory from where the document were loaded:</p>
<p><code>&lt;!DOCTYPE spec SYSTEM "dtds/mydtd"&gt;</code></p>
<p>Notes:</p>
<ul>
<li>The system string is actually an URI-Reference (as defined in <a
href="http://www.ietf.org/rfc/rfc2396.txt">RFC 2396</a>) so you can use a
full URL string indicating the location of your DTD on the Web. This is a